Abstract: Aqueous plating baths for the electrodeposition of a zinc coating on a substrate are disclosed and comprise zinc ions to which has been added an amount, effective to provide a level and bright zinc electrodeposit, of a polymeric nitrogen-containing compound prepared by reacting a poly(alkyleneimine) with a cyclic carbonate consisting of carbon, hydrogen and oxygen atoms. More particularly, the poly(alkyleneimine) has a molecular weight within the range of from about 200 to about 100,000, and the cyclic carbonate is one wherein the ring oxygen atoms adjacent to the carbonyl grouping are each bonded to a ring carbon atom, and the ring containing the oxygen and carbon atoms has only three carbon atoms and no carbon-to-carbon unsaturation.The aqueous plating baths of the invention may be acid zinc plating baths or alkaline cyanide or non-cyanide containing plating baths.

Abstract: A composition as described which is useful particularly in improving the electrodeposition of bright zinc from aqueous acidic plating baths. The new composition comprises a reaction product obtained by the process of preparing an intermediate composition by reacting formaldehyde in water with sulfamic acid and at least one aliphatic acyclic amine containing at least one primary amine group, and thereafter reacting said intermediate compound with at least one epihalohydrin or glycerol halohydrin or mixtures thereof. Aqueous acidic zinc plating baths containing the additive compositions of the invention and methods for depositing a bright zinc coating over a wide range of current densities also are described.

Abstract: A novel fuse arrangement for electrical and electronic circuits is provided having shorter arcing time and arc-extinguishing time as compared to the prior art fuses. The fuse arrangement described herein comprises a pair of electrodes having contact terminals for connection to the circuit and a support member preferably disposed triangularly relative to the electrodes. In one embodiment, a fusible wire elment is stretched between the electrodes and has its mid portion supported by the support member. The support member is made from a material of large heat capacity and high thermal conductivity to provide a heat dissipating surface for the heat generated in the fusible wire element.

Abstract: Apparatus for forming a seal between layers of a carton of thermoplastic coated paperboard material and the like wherein the thermoplastic material in the area to be sealed serves as the sealant and is activated to flow by frictional heat generated by a vibration welding horn and is then allowed to cool and set under pressure to form the seal between the layers. The carton first moves to an activating station wherein the layers to be sealed are engaged on opposite surfaces by a vibrating horn and a back-up member (in the form of an anvil or a mandrel) for a time sufficient to activate the thermoplastic material to flow. The carton is then carried to a clamping and sealing station at a different location from the activating station with the thermoplastic material in the activated state.

Abstract: An improved circular sorter includes an integral, rotatable, circular ring on which tiltable tray carriages are mounted. The ring is driven by a peripheral drive to convey the tiltable trays past loading stations, where articles are placed thereon, and then to sort locations where articles are selectively discharged by tray tilting, to either the inside or outside of the ring. Both loading and sort locations can be disposed interiorly or exteriorly of the ring. Yieldable rollers support the ring and operatively accommodate variations in vertical disposition, while a combination of fixed and yieldable rollers guide the ring in a horizontal path and accommodate ring pitch inaccuracies.

Abstract: Improved power and free trolley apparatus includes independent pusher and hold back dogs positively moved to an accumulate position by a counterweighted actuating lever moving to an accumulate position. The dogs, however, are self-biased, the pusher dog self-locking in its drive position, and the dogs are not interlocked with the lever. They move independently of the lever into operative position when the lever is moved into a non-actuating position and out of blocking relationship with the dogs. The actuating lever counterweight defines a trolley brake for preventing excessive trolley bounce back during accumulation. Another aspect of the invention includes a movable cam selectively raising a drive dog in a trailing trolley for switching, and permitting accumulation of trolleys through a switch zone when held in an inoperative position as when the switch zone is choked.

Abstract: An envelope opener comprising first, second and third shear stations for shearing three edges of an envelope in sequence one edge at a time. Each shear station sequentially aligns the envelope by contacting the edge to be sheared, shears the contacted edge, and then releases the envelope. A microcomputer monitors the advance of the envelope through and between the shear stations and causes the shear stations to cyclically align, shear and release the envelope. A peel back station downstream of the shear station peels back a panel of the envelope to expose the contents thereof. If an envelope is jammed at or between any of the stations, the microcomputer actuates a display to indicate a jam condition. The microcomputer also shuts off power to the opener to prevent damage to the envelope.

Abstract: A security system in which personnel are permitted access at certain locations on the basis of data magnetically encoded on a card inserted into the system by the personnel. Access is also limited on the basis of keyboard data entered at the remote location by personnel wishing access. The keyboard data required for entry is a permutation and combination of the data on the employee's card, the particular combination and permutation required at each remote location being independently programmable by switches accessible on the inside of the remote security system.

Abstract: A spool of thread, such as dental floss, is housed in a holder, preferably made of plastic. The thread or floss is wound on a bobbin having a hollow, cylindrical hub area. A clutch for controlling the bobbin rotation comprises a split post having an enlarged cross section near the center thereof. The split post fits into the hollow, cylindrical hub area of the bobbin with the post squeezed slightly to provide a desired amount of friction between the central post and the cylindrical hub walls. The friction keeps the bobbin from unwinding; however, the friction is not so great that it keeps the thread or floss from pulling smoothly and evenly from the bobbin.

Abstract: To mix a gas with a mass flowing continuously through a conduit, the gas is caused to flow from a pressurized gas supply into the conduit by way of a nozzle in which the gas expands at a critical pressure ratio; and the pressure of the gas flowing from the nozzle is increased before the gas is introduced into the flowing mass.

Abstract: An induction system for a sortation conveyor includes a single infeed conveyor adapted to supply two separate loading stations. In a preferred embodiment, the infeed conveyor is operatively connected with a reversible turn conveyor interposed between the infeed conveyor and the two separate loading stations, one loading station receiving articles from one end of the reversible turn conveyor and the other loading station receiving articles from the other end of the reversible turn conveyor. The reversible turn conveyor may be automatically or manually controlled to operate in either a clockwise or a counterclockwise direction as required to supply articles from the infeed conveyor to both loading stations.

Abstract: A composition is described which is useful particularly in improving the electrodeposition of tin, lead or tin-lead from an aqueous acidic plating bath. The new composition comprises a reaction product of an unsaturated nitrogen-containing heterocyclic compound with a mixture comprising formaldehyde and an unsaturated aliphatic aldehyde containing up to about six carbon atoms. Aqueous acidic plating baths containing the additive compositions of the invention, and methods for depositing tin, lead or tin-lead alloys from such baths as well as additive compositions for forming the baths also are described.

Abstract: A spring deck for seating structures consisting of a wire fabric sheet adapted to be applied to cover an open seating frame, and consisting of a pair of normally straight side spring wires secured at spaced intervals along their lengths to the side legs of the frame, and closely spaced, normally straight spring cross wires extending between and connected at their ends to the side wires.

Abstract: A honing machine for honing ball bearing races or other arcuate grooved surfaces that extend around the circumference of cylindrical workpieces comprises a workpiece support assembly for rotatably supporting the workpiece in the machine, a spindle drive mechanism for rotating the workpiece, and an oscillation mechanism for holding and oscillating a honing stone in abrading engagement with the arcuate surface of the workpiece as the workpiece is rotated. The oscillation mechanism includes an oscillating tool holder for holding the honing stone and a mounting mechanism for rotatably supporting the oscillating tool holder. The mounting mechanism is tiltable by means of a lift cylinder and toggle linkage to lift the stone out of engagement with the grooved surface of the workpiece for insertion and removal of successive workpieces into and out of the honing machine.

Abstract: A shoulder pad for football players comprising a chestplate portion, a backplate portion and a pair of arches integrally connecting the plate portions, the arches being laterally spaced to provide an opening for the neck of the wearer with the spacing such that the arches lie adjacent and relatively close to the neck. The arches and padding thereunder are relatively narrow in relation to the width of the shoulders so as to provide freedom for upward movement of the outer part of the shoulders without substantial interference from the arches. A pair of caps of relatively rigid material adapted to fit over the outer portion of the shoulders are flexibly connected to respective arches and have shoulder padding on the inside thereof separate from the arch padding for enabling the caps and the shoulder padding to move freely upwardly upon upward movement of the outer part of the shoulders.

Abstract: A carton bottom breaker for performing a prebreaking operation on the panels of a bottom closure structure of a coated paperboard carton mounted on a carton forming mandrel. A movable carrier member has a V-shaped breaker means fixed thereon which comprises a pair of outwardly sloping folder plates for operative engagement with the fold-over panels of the bottom closure of a carton. A spring biased V-shaped breaker plate member is movably mounted on the carrier member between the sloping folder plates in a plane transverse to the V-shape formed by the folder plates, and it is adapted to engage the fold-in panels of the bottom closure of a carton. A mandrel stop finger is carried by the V-shaped breaker plate member for abutment with the carton mandrel, in an off-center position, to prevent damage of the mandrel by engagement with the V-shaped breaker means and V-shaped breaker member.

Abstract: A self-adjusting breather bag for use in sealed storage structures to limit the contact of ambient atmosphere with the stored material. The self-adjusting of the lower part of the bag to a higher position in the structure is accomplished by strategically assembling elastic or resilient members inside or outside the bag which automatically raises the lower portion of the bag when the bag is in a substantially non-inflated condition. A retracting device may be used to store the elastic or resilient members to provide for a greater range of inflation and retraction of the bag.

Abstract: An aqueous acid plating bath for electrodeposition of tin, lead or tin-lead alloys on a substrate is described and comprises at least one metal salt selected from the group consisting of a stannous salt, a lead salt or a mixture of stannous and lead salts, and as a brightener agent, an effective amount of at least one alkoxylated amine of the formula ##STR1## wherein R is a fatty acid alkyl group containing from about 8 to about 22 carbon atoms,R.sup.1 is an alkylene radical containing up to about 5 carbon atoms,R.sup.2 and R.sup.3 are each independently an ethylene or propylene group,A is 0 or 1, andX, y and z are each independently integers from 1 to about 30, and the sum of x, y, and z is an integer of from about 2 to about 50.Methods for the electrodeposition of tin, lead, or tin-lead alloys from such baths as well as additive compositions for forming the baths also are described.

Abstract: Nitrogen and sulfur compositions are described which are useful in aqueous acidic plating baths and processes for electrodepositing bright and level copper coatings. The compositions are prepared by reacting a mixture of(a) a disulfide having the formula[RR'NCS.sub.2 ].sub.2 (Formula I)wherein R and R' are each independently hydrogen, alkyl or aryl groups, and(b) a halo hydroxy sulfonic acid having the formulaX(CH.sub.2).sub.n CHOH--CH.sub.2 SO.sub.3 M (Formula II)wherein X is a halogen, n is one or two and M is hydrogen or an alkali metal, in(c) an aqueous alkaline medium.Particularly bright and level deposits are obtained when the reaction mixture used to form the composition also contains an aliphatic aldehyde containing up to three carbon atoms. The presence of the above-described brightening and leveling agents in acid copper plating baths produces a lustrous, smooth and level deposit of copper over a wide range of current densities, particularly when wetting agents are included in the plating baths.

Abstract: A water jet nozzle comprises an inlet pipe extending into a converging conical section of an outlet pipe, with a narrow annular opening between the inlet pipe end and the outlet pipe inner wall. The outlet pipe also has a straight section in continuation of the smaller end of the converging conical section followed by a diverging conical section and a substantially straight outlet section. Pressurized air is introduced through the annular opening to surround the central water flow, thereby reducing friction against the outlet pipe wall, the consecutive outlet pipe sections further improving the shape and reach of the ejected water jet.