Abstract: A product support table, having an elongated longitudinal opening is positioned over a pair of fin seal wheels which provide a seal between two edges of a sheet of film that has been wrapped around an article. The product support table supports a pair of product transport belts that are located between the product being wrapped and the product support table. The belts run the length of the product support table generally in contact with the top side of the table and then, on the return run, are directed upwardly to the bottom of the product support table for most of its travel back to a drive roll and a belt take-up roll.

Abstract: An inverted horizontal wrapping machine is provided with an article infeed system which includes a horizontal feed trough with an open exit end positioned closely adjacent the inlet end of the wrapping material tube being continuously formed by the machine's forming box. Offset to one side of the trough is a looped drive chain structure which is rotated in an essentially horizontal plane. A spaced series of flag-type pusher members are pivotally secured to the chain structure for movement therewith, the flag portions of the pusher members along the inner side of the chain structure being swept through the trough to slide articles therein sequentially into the tube inlet. As each pusher flag reaches the exit end of the trough, a first cam element upwardly and rearwardly pivots the flag to disengage it from its associated article, and the pivoted flag is then moved horizontally away from the trough.

Abstract: A packaging article inclusion-proofing device for use with an end-sealing mechanism includes a motor for driving a conveyor for feeding packaging articles, with a predetermined space therebetween, into a packaging material which is disposed downstream and formed into a packaging tube, a motor for driving a series of rolls which deliver the packaging material, and a motor for driving an end-sealing mechanism for achieving end-sealing of the tubular packaging material. A deviation detecting sensor is provided for detecting any deviation of the packaging articles from a position at which they would normally be disposed during the end-sealing operation. A reference timing pulse generator generates predetermined reference timing pulses with respect to the feeding of the packaging articles.

Abstract: An apparatus for the production of meat products, especially cooked ham, which is cooked in a compact form in a net, wherein the raw or preprocessed meat product is wrapped in a casing of edible collagen and a netting of optional mesh design is applied thereover and, subsequently, the product is subjected to the final cooking. Apparatus for the simultaneous enveloping of compact meat products with an edible collagen film and an elastic netting includes a feed sheet for the meat products, which fits into an inner guide tube, and an outer tube upon which a supply of the elastic netting is provided, and a guide channel situated therebetween for the collagen film(s). The apparatus is complemented by elements for maintaining a supply of the collagen film and the unrolling and fold-free guidance of the collagen film, as well as a conventional clipping device.

Abstract: An apparatus for forming an encased meat product which includes means for forming an enclosed casing from a series of overlapped helical revolutions of a strip of casing material, means for filling the casing with a meat emulsion, means for rotating the filled casing, and means for holding the filled casing against rotation while the unfilled casing is rotated to create a twist point at the end of the filled casing, whereby the twist point will have the same number of twists therein as there are helical revolutions of strip material in said enclosed casing.

Abstract: Products to be formed into multiple packs are advanced, evenly spaced, towards a wrapper-forming zone and the flow of products is stopped cyclically within the zone so as to cause the formation of groups of products which are substantially packed together for insertion in respective packages.

Abstract: A vacant package-proofing control device for use in conenction with a packaging machine includes a first motor for driving a conveyor for feeding articles to be packaged, with a predetermined spaced defined therebetween, and a second motor for driving a series of rolls which deliver packaging material, formed into a tube, into which the articles are to be inserted for packaging. A third motor is also provided for driving a pair of end-sealing mechanisms. An absence detecting sensor is disposed at a predetermined position upstream of the end-sealing mechanisms for detecting the absence of any packaging article from its predetermined position upon its conveyor. A reference timing pulse generator is also provided for generating predetermined reference timing pulses in connection with the timing of the feeding of the packaging articles.

Abstract: The continuously formed wrapping material tube traversing a horizontal wrapping machine, and containing articles to be wrapped therein, is sequentially passed between a first pair of opposed, counter-rotating heat sealing bar sets, and then between a second pair of opposed, counter-rotating combination heat sealing and cutting bar sets, to heat seal and cut spaced apart longitudinal sections of the tube, each positioned between an adjacent pair of articles, to form individual, article-containing packages. As each of these longitudinal tube sections passes through the first bar set, corrugated outer ends of two bars therein mesh to compress and heat seal the tube section along a corrugated heat seal area whose ridges and valleys extend transversely to the tube length.

Abstract: A wrapping method for operating a vertical, inclined or horizontal type wrapping machine for wrapping food products such as loaves of bread, wads of noodles or the like with synthetic resin film is free from the problem which are inherent in conventional wrapping machines related to abrupt stopping actions of the wrapping operation whenever products are incorrectly positioned. The method provides a way to bypass the problem by detecting in advance incorrectly positioned products and temporarily halting only the operation of the cutting blades without stopping the overall operation of the machine. The method according to the present invention can significantly enhance the efficiency of the wrapping operation and reduce the time and labor required to remove the trouble in a conventional machine.

Abstract: There is disclosed an apparatus for forming a shrink-wrapped package from polyolefin film which overcomes the problems of forming the bottom lap seal of the tubular package formed from the film and initial low strength of the heat seal at the forward end of the package, by positioning the static sealer for the bottom lap seal upstream from the heat sealer for the forward end of the package and by using a ram to move packages into the tubular package but to stop them short of the heat seal at the forward end of the package.

Abstract: A static seal is applied to overlapping edges of film wrapped about a product. A hollow forming head forms the film into a generally tubular configuration so that longitudinally extending opposite edges of the film overlap. A first electrode is disposed within the tubular cavity defined by the film and bears downwardly upon the overlapped edges of the film as the film travels past the first electrode. A second electrode is positioned downwardly of the overlapped edges and outside the tubular cavity. A stream of electrons flowing across an air gap between the electrodes applies the electro static seal.

Abstract: This package wrapping apparatus is equipped with film hauling device.This film hauling device comprises lower and upper conveyor belts which can catch selvage of film between those belts and unwind folded rolled film uniformly.Furthermore one end of lower or upper conveyor belts can be opened or closed by hand and, also can be locked in the closed position by locking lever.So if a piece of selvage of film is cut away, it can be removed from the above film hauling device easily by opening upper conveyor belt.

Abstract: Continuously transported groups (21) of articles (20), in particular packages, are wrapped by means of wrapping with a continuous film web 23 (stretch film) and held together thereby. The article groups (21) are conveyed by an inward conveyor (31) to a winding station (25) having a winding unit (26), and after being wrapped with their wrapping (24) are transported away by an outward conveyor (32). In the region of the winding station (25) the article groups (21) are held, conveyed and in particular fixed in their relative position by a support member (33) which consists of at least one horizontal or vertical support wall. The support wall or support walls are arranged in the region between the articles (20) of one article group (21), in other words in the region of mutually facing surfaces of the articles. As a result, the film web 23 is directly wound around the articles.

Abstract: A packaging apparatus for folding the front and rear ends of a tubular film which covers an article toward the bottom surface of the article. After the front end of the film has been folded while the article is transported, a bar-like roller traveling along the bottom surface of the article at a higher speed than the transport speed of the article catches the rear end of the film and folds it. An air blowing device is installed along the path of travel of the bar-like roller. The air from the air blowing device presses the front and rear film ends against the bottom surface of the article. Thereby the front and rear film ends are prevented from being contacted by the bar-like roller which would strip it from the bottom surface of the article.

Abstract: A film wrapping apparatus for wrapping articles and a method of wrapping articles in a heat-sealable thermoplastic packaging film. The apparatus has a film-hauling device in form of a conveyer having travelling clamping runs of upper and lower belts for clamping a free marginal selvage or edge part of a folded strip of packaging film having the parts thereof superposed. An infeed device positions articles successively at a position in which the superposed parts of successive lengths of the folded film are hauled over and under the articles respectively and envelope the articles as the successive lengths of the folded film are advanced intermittently by the film-hauling device from a web.

Abstract: A packing machine includes a supply conveyor arranged for advancing articles to be wrapped; a first motor drivingly connected to the supply conveyor; a second motor arranged for advancing a wrapper sheet codirectionally with the advance of articles; a sealing unit for periodically providing a transverse sealing seam in front of and behind each article subsequent to wrapping the article; and a third motor drivingly connected to the sealing unit. There is provided a circuit arrangement operatively coupled to the sealing unit for regulating a rotational position of the third motor. The circuit arrangement includes a computer having an input connected to the first motor for receiving data on consecutive rotational positions. To the computer there are applied data on dimensional characteristics of the articles and the wrapper sheet. The computer calculates, from the data, synchronous rotary positions of the second and third motors at least during periods when the sealing unit is in contact with the wrapper sheet.

Abstract: In order to enable a packaging machine for producing packages of the flow-pack type to be adapted automatically to different sizes of package and different operating conditions, instead of the use of separate electronically-synchronized drive motors for the various movable elements, at least some of the movable elements, whose precise synchronization is essential for the correct functioning of the machine, are controlled by a single motor through a mechanism which is adapted selectively to the various shapes and different operating conditions by means of electronically-controlled positioning members.

Abstract: In a packaging machine in which a leading unit for advancing a film web and forming it into a continuous tubular shape during its travel, a feeding unit for supplying articles to be wrapped into the film tube, and a cutting unit for at least sealing the film tube along the transverse direction, are driven by independent motors, a method for controlling the motors includes controlling the running speeds of the motors for the feeding unit and the sealing unit on the basis of the running speed of the motor for the leading unit. A control device for carrying out such a method includes detectors for detecting conditions including positions of the leading unit, feeding unit and sealing unit, and a control unit connected to the detectors for controlling the motors of the feeding unit and the sealing unit on the basis of signals from the detector which detects operating conditions of the leading unit.

Abstract: A rotary film sealing and severing device for use with thermoplastic film for forming packages. The device includes a rotating anvil assembly and a counter-rotating film cutting assembly having a heated sealing and cutting knife. First and second liquid cooled clamping bars on either side of the knife hold the layers of film together while the film is being sealed and cut. Cooling the clamping bars prevents the film from adhering to the clamps and causes the layers of film to quickly fuse together and allows high speed operation by preventing separation of layers of film due to slow cooling.

Abstract: A packaging method includes the steps of supplying auxiliary bags, adding an adhesive layer to one of the surfaces of each auxiliary bag, feeding a continuous sheet-like wrapping material to a forming and filling assembly, attaching the auxiliary bags by the adhesive layer to the wrapping material during travel thereof, at an interval corresponding to a length required for forming each package and each at a portion thereof which becomes an inner surface of the package other than sealed portions thereof, forming the wrapping material into a tubular shape with the auxiliary bags inside, supplying articles into the tubular wrapping material and sealing the same to form the packages.

Abstract: A method of forming an encased meat product by forming an enclosed casing from a series of overlapped helical revolutions of a strip of casing material, filling the casing with a meat emulsion, rotating the filled casing and then holding the filled casing against rotation while the unfilled casing is rotated to create a twist point at the end of the filled casing, whereby the twist point will have the same number of twists therein as there are helical revolutions of strip material in said enclosed casing. An encased meat product made by the foregoing method.

Abstract: In machines for the continuous packaging of products inside a film of a plastic material, folded above the products, so as to form a continuous tubular wrapping, a device for changing the opening between the welding element and the counter-welding element permits the operating distance between the welding elements to be changed as a function of the height of the products in course of packaging, thus ensuring the highest packaging speed for both low- and high-thickness products.

Abstract: A method of and apparatus for packaging product masses in a form, fill and seal machine, wherein a continuous length of packaging film is joined in running relation by a continuous length of separately formed plastic reclosable fastener assembly having interlock profile strips spot sealed together at package length intervals. The corunning fastener strip assembly and the packaging film are oriented so that the spot seals of the strip are located in alignment with the spaces between the product masses on the film to assure that the fastener strip assembly will be cross sealed at the spot seals when the film is cross sealed between the product masses to provide individual packages. The orienting may be effected by an indexing arrangement including sensor response to index marks on the film and the fastener assembly.

Abstract: Articles are stretch wrapped in a plastic film by forming a tube around them from a flat plastic film, sealing the longitudinal edges of the film and then longitudinally stretching the tube to cause it to constrict on the articles being wrapped. The tube is initially of a sufficient diameter to avoid contact with the articles. Both the articles and the tube are conveyed downstream. The tube is fed downstream by a positive transport means which isolates the tube forming operation from any downstream tension. A downstream mechanism pulls on the tube faster than the positive transport means conveys it causing the tube to stretch and constrict on the articles to be wrapped. The tube is closed behind each set of articles and the downstream portion is severed from the upstream portion forming a tube terminus behind one set of articles and in front of the next set.

Abstract: A shrink wrap packaging machine that shrink wraps twice as many packages per unit of time as conventional machines. The machine includes a pair of longitudinally spaced sealing and cutting elements. Both elements are preceded by a sensor. The first sealing and cutting element is activated when the trailing edge of even numbered packages are detected whereas the second sealing and cutting element is activated when the second sensor detects the trailing edge of odd numbered packages. Packages are therefore wrapped in groups of two after leaving the first sealing and cutting station and are individually wrapped after leaving the second sealing and cutting station. The conveyor belt that carries packages through the machine operates at nearly twice the speed of prior art machines but the sealing and cutting elements of the present machines operate at the same rate as prior art machines.

Abstract: The disclosure is directed to a heat-sealing jaw assembly for use in packaging machine. The heat-sealing jaws are of the type commonly referred to as "flying" heat-sealing jaws since they have a component of motion in the same direction as the motion of a package, or other workpiece, to be sealed. The heat-sealing jaws are also of the type commonly referred to as "rotary" heat-sealing jaws since each jaw rotates about an axis. In a preferred embodiment a pair of heat-sealing jaws is provided. One of the jaws rotates on a fixed axis while the other jaw rotates about an axis which moves in an arc having a radius centered on the fixed axis of the first jaw. The movement of the second jaw through the arc is provided by a pivoted support for the jaw axis.

Abstract: An improved method and apparatus for constructing an improved pocketed coil string, in which a tube of fabric is formed, a transverse seam is provided across the tube, a partially compressed coil spring is inserted adjacent to the seam, and a second seam is provided, thus encapsulating the spring. The fabric is guided around the outer surface of a tubular mandrel, thus forming a tube, and the spring is inserted into the mandrel such that as the spring exits the opposite side of the mandrel, it is within the tube of fabric. Excessive spring compression is avoided.

Abstract: A package for a flat, generally rectangular item includes a first, inner wrapper folded about the two large faces and the two side faces and having a longitudinal sealing seam extending on one of the large faces generally parallel to the side faces, and opposite transverse sealing seams at opposite end faces extending parallel thereto. The longitudinal sealing seam and the transverse sealing seams are all fin seams. The longitudinal sealing seam extends approximately centrally on the large face, and the two transverse fin seams are folded onto the large face which contains the longitudinal fin seam. There is provided a second, outer wrapper surrounding solely the large faces and the side faces and holding the fin seams folded against the large face.

Abstract: A rotary film sealing and severing device for use with thermoplastic film for forming packages. The device includes a rotating anvil assembly and a counter-rotating film cutting assembly having a heated sealing and cutting knife. First and second liquid cooled clamping bars on either side of the knife hold the layers of film together while the film is being sealed and cut. Cooling the clamping bars prevents the film from adhering to the clamps and causes the layers of film to quickly fuse together and allows high speed operation by preventing separation of layers of film due to slow cooling.

Abstract: An oscillating sealing wire for high speed sealing of thermoplastic film. The sealing wire curved in the shape of a bow rocks back and forth across the moving surface of a thermoplastic film so the wire continuously presents a hot surface to the film. The film removes heat from the wire surface which touches the film. The oscillating wire continuously presents a new hot surface to the film to allow high speed movement of the film and still obtain a good seal.

Abstract: An automatic machine for the continuous production of dual-use filter sachets for infusion products, the filter sachets being in the form of bags or pouches containing successive portions of the products. Along the production line there are a succession of devices designed to effect step by step the longitudinal folding and sealing of a strip of filter paper forming therefrom a horizontally extending flattened tube and for the transverse thermal welding of the tube in a manner such as to enclose said individual dosed fractions. A rotary wheel has pickup elements for applying to the flattened tube equidistantly spaced labels, a longitudinally continuous thread transversely contacting the labels, as well as stickers or tabs weldable by alternate transverse thermal welding partly to the back of the labels. The tube is then sectioned into portions comprising at least two bags and the bags are set back to back and sealed together at their extremities.

Abstract: Improved form, fill, and seal machine for making aseptic sealed packages incorporating a plurality of web guiding rollers and flanges for manipulating a continuously fed polyfoil web into a longitudinal tube having a triangular cross section and opposing superimposed web edges that are sealed together to form the longitudinal seal in the tube. Web advance may be continuous or intermittent. Induction heating is used to longitudinally seal the edges of the web together to form a tube.

Abstract: In continuous packaging of comestibles in individual packages of thermo plastic sheet material, elongate, reciprocating crimper bars or dies simultaneously sever the packages and inpart end crimp seals to the packages but unfortunately featuring a high rate of rejects overcome by a special contour in the surface of one of the said crimper dies, according to present discovery.

Abstract: The invention relates to a horizontal form-fill-seal packaging machine in which a horizontal form-fill-seal packaging machine is provided a plurality of modules for carrying out successive stages of form-fill-seal packaging process, the modules being mechanically separate from one another and including at least one stepper motor drive, the stepper motors all being controlled and synchronized by a microprocessor. This results in a packaging machine which can be efficiently fabricated, installed and maintained and which can perform highly accurate, synchronized, high speed automatic wrapping.

Abstract: A method is disclosed for continuously manufacturing individually wrapped, single slice, firm bodied meat products formed of a viscous heat settable non-syneresing meat emulsion which contains a heat-settable starch.

Abstract: An electronic computer orders magazines of multiple titles from dispensing units, each of which has a single title assigned to it, and these orders are organized by carrier route, that is to say all magazines for subscribers of a specific carrier route are ordered in sequence. The orders are directed to a magazine dispensing unit which has a different pocket for each title, and these pockets deliver to the conveyor one after the other magazines that fill the subscriptions to which the various addresses pertain. The computer also causes the insert dispensing unit to deposit on the magazines as those magazines pass under the unit inserts that are appropriate to the magazine and its subscriber. Next a wrapping machine places a transparent polymer film around the magazine and any insert which is on it. Then the conveyor carries the magazine past an ink jet printing unit where the subscriber's name and address are applied to the polymer envelope, the printing unit likewise being connected to the computer.

Abstract: The invention relates to an arrangment for the continuous heat treatment and packaging of a liquid product with the object of sterilizing the product, the product being heated for a short time together with, and surrounded by, the packing material wherein it is to be enclosed. The product is introduced into a tube of flexible material whereupon the tube containing the product is introduced between two parallel metal bands, movable synchronously in their longitudinal direction, the tube being received and compressed between the bands so that the tube is transported with the bands at the same time as the cross-sectional area of the tube is reduced and the product is made to flow forward through the compressed tube in a gaplike space. Heat is transmitted to the product with the help of the metal bands (1) while the product present between the metal bands is kept under pressure.

Abstract: Starting with a continuous flat sheet upper forming means define a central portion of the sheet which will form the top of the wrapper and two side flaps each of which is situated between the central portion and a respective longitudinal edge of the sheet. Lower forming means fold these side flaps downwardly under a plate for closure of the wrapper and, due to the advance of the folded sheet, cause the joining of the longitudinal edges of the sheet and the consequent formation of a tubular wrapper. The forming means consist of rollers whose position relative to the closure plate as well as their relative positions, can be selectively adjusted while the geometry of formation of the sheet is kept substantially unaltered.

Abstract: A parting-off apparatus used, e.g., to part off individual sausages from a tubing, which is continuously filled with sausage meat, comprises displacing members (9, 10; 19, 20), which can be rectilinearly moved in mutually opposite directions and have triangular cutouts (11; 21), which constrict the tubing so as to form a constricted portion therein and in that region displace the filling material in the tubing. The displacing members (9, 10; 19, 20) are periodically driven by means of a control disc (4), which is periodically driven to rotate in one sense and which has the configuration of a circular ring and has an axis of rotation (2) which coincides with the axis of the tubing and of the opening (12) defined by the displacing members.

Abstract: In a bagmaker, two pairs of opposed jaws to draw a web of material about a former and seal the web to form separate bags, each set of jaws are cantilevered on a support and have electromagnetic assist to provide pressure during sealing.

Abstract: A casing article is disclosed which includes a shirred casing having a tubular leader extending through its bore wherein one end of the leader is attachable to a web for drawing the web through the bore of the shirred casing.

Abstract: Improved form, fill, and seal machine for making aseptic sealed packages incorporating a plurality of web guiding rollers and flanges for manipulating a continuously fed polyfoil web into a longitudinal tube having a triangular cross section and opposing superimposed web edges that are sealed together to form the longitudinal seal in the tube. Web advance may be continuous or intermittent. Induction heating is used to longitudinally seal the edges of the web together to form a tube.

Abstract: In an apparatus and a method for producing sausages, an apparatus comprising a tubular member for feeding a flowable meat mass and a roll of a strip like film mounted thereon, bending means axially mounted around said tubular member for converting the strip-like film into a tubular film with the side edges of the film in overlapping relationship, welding means adjacent the outlet of the bending means for welding the overlapping side edges, said tubular member having an ejector end for supplying meat into the casing, while the tubular member, the film during shaping and the welding means simultaneously rotate, to thus rotatably feed the casing containing the meat-mass into rectilinearly moving clamping means to form a string of sausages.

Abstract: A method and apparatus are presented for controlling a driving system in a packaging machine. The method comprises providing a first motor for driving an article infeed conveyor for feeding articles to be packaged into a tube of packaging material, a second motor for driving a pair of rollers for drawing a film of packaging material and a third motor for driving a pair of sealing heads at an end seal mechanism and controlling the speed of the second motor and the speed of the third motor to be dependent upon the speed of the first motor.

Abstract: A wrapped article and a method of packaging it in a wrapper of sealable material includes the steps of surrounding the article about its side faces with the wrapper, providing the wrapper with a longitudinal seam to obtain a wrapper sleeve projecting beyond the end faces; flattening the wrapper sleeve beyond the end faces and providing transverse seams in the wrapper sleeve beyond the end faces to obtain fins projecting therebeyond, folding each fin along a root edge thereof against the respective end face to extend parallel thereto; folding side margins of each fin through 180.degree. along respective side edges onto the fin; and folding an outer edge zone of each fin through 180.degree. along a respective top edge onto a respective end face.

Abstract: A method and apparatus for increasing the performance and through-put of a high speed horizontal wrapping machine of the type having mechanically independently driven infeed, film drive and cut/seal head motors, each controlled by a shared programmed microprocessor whereby in the event that a product to be wrapped gets out of registration to the point where the machine's cut/seal head blades might otherwise engage the product being wrapped rather than only the film between two adjacent products, the condition is sensed and a software routine is called which causes the cut/seal heads to come to a stop in the open condition while the film tube continues to be fed until all the products, including the one out of registration and all those downstream from it, exit the wrapper, at which point the wrapper resumes its normal running mode. In this fashion, damage to the cut/seal head and associated down-time to clear the jam is avoided.

Abstract: The present invention provides a method and apparatus for attaching fitments to filled flexible containers. A series of interconnected filled flexible containers are conveyed between a pair of belt conveyors which limit lateral movement of the containers. A third conveyor urges fitments against the bottoms of the containers and the fitments are sealed to the containers.

Abstract: The apparatus of each embodiment includes a suction housing having a perforated duct therein. Fibrous material supplied to the inlet of the duct is compacted by air being evacuated through the perforated sidewall of the duct. The continuous compacting of fibrous material aids in moving the already compacted material out the outlet of the duct.

Abstract: A film packaging apparatus comprising a tube former for forming a continuous length of a heat-meltable, heat-shrinkable film into a tube of such film with its longitudinal margins overlapping each other and extending downward through a bottom longitudinal outlet of the former, a longitudinal sealer disposed below the former for longitudinally heat-sealing and cutting the overlapping film margins, a transverse sealer disposed behind the former for transversely heat-sealing and cutting the film tube, wherein the longitudinal sealer comprises a cutter disc having a rounded circumferential edge and a counter disc having a flat circumferential surface in contact with the rounded edge at a position slightly deviating toward the cutter disc from a center line of the longitudinal outlet, and a longitudinal guide plate disposed immediately under the position of contact between the two discs.

Abstract: The horizontal wrapping machine of the type wherein a succession of articles are fed into a traveling tube of web material which is sealed longitudinally and severed and sealed between the articles to produce individual hermetically sealed packages. A variable speed motor drives a conveyor which may be provided with article feeding flights and a switch, actuated once each revolution of a timing shaft, provides a pulse corresponding to each flight on the article feeding conveyor. In addition an encoder driven by the variable speed drive motor shaft provides a digital velocity signal used as a reference signal for servo motors that may be coupled, in combination or individually, to drive web feed rolls, longitudinal sealing wheels and one or more sealing and severing heads. A delivery conveyor transporting individual packages may, through a suitable drive train, be driven by the variable speed drive motor.