Abstract: A clamp structure with one or several plastically deformable ears whose holding ability is increased by an external strengthening member surrounding the plastically deformable ear in its non-deformed condition; the lateral portions of the strengthening member are thereby so constructed and shaped that an application of a force to the lateral members will cause the ear to be plastically deformed.

Abstract: A high pressure coupling for hose-like objects in which the nipple structure includes a main portion, a connecting nipple portion extending from the main portion in one direction and a nipple portion extending from the main portion in the opposite direction. A sleeve-like member made from tubular stock is adapted to be securely connected to the nipple structure by crimping, flanging or the like. The nipple portion includes outwardly projecting, rounded-off ribs cooperating with rounded-off grooves in the sleeve-like member so that the hose inserted between the nipple portion and the sleeve-like member is held securely in position after the nipple portion is internally expanded with subsequent reduction of the cylindrical surface of the sleeve-like member. Both the nipple structure as well as the sleeve-like member are made from appropriate stock machined accurately to the required dimensions.

Abstract: For the connection of two edges of areal parts which extend at least along one common section essentially parallel to one another, at least one retaining element is arranged at the one edge which form-lockingly engages from behind, as viewed in the edge direction, in a recess in the other edge. At least one projection arranged laterally offset at the one edge in relation to the retaining element in the direction of the engagement from behind, abuts form-lockingly at the part with the recess essentially in the edge direction. For the connection of the terminal edges of open ends of a ring-shaped clamping band, analogously a retaining tongue is provided, preferably in the center of the one edge with lugs projecting on both sides from the tongue which form-lockingly engages from behind in an essentially congruent recess in the other edge also arranged essentially centrally.

Abstract: A method and apparatus for mounting and tightening an open clamp about an object to be fastened in which a first jaw-like member causes the band end portion intended to constitute the inner band portion to be placed about the object to be fastened, a second jaw-like member then causes the other band end portion of the clamp intended to constitute the outer band portion to be placed about the object to be fastened in such a manner that the outwardly extending hook or hooks in the inner band portion is or are adapted to engage with the corresponding aperture or apertures in the outer band portion.

Abstract: A clamp structure of the open type with mutually overlapping inner and outer band portions, in which two ears are provided disposed diametrically opposite one another and at least the outer band portion is provided with an additional opening on the side of its ear opposite the free end of the outer band portion to balance the clamp structure when installed on an object to be fastened thereby. For larger clamp sizes, the inner band portion may also be provided with an opening located on the side of the outwardly extending hooks of the mechanical interconnection opposite the free end of the inner band portion. The inner band portion may additionally be provided with an outwardly extending hook adapted to engage in the opening provided in the outer band portion so as to keep the two band portions axially aligned.

Abstract: A mechanical interlock for an open clamp structure which includes a clamping band having an outer band portion and an inner band portion, intended to overlap in the closed condition of the clamp structure. The inner band portion is provided in the area near its end at least with an outwardly extending combined guide and support hook whose inclined guide and support surface is formed by its rear edge facing away from the free end of the inner band portion; the rear edge forming the guide and support surface is thereby non-rectilinear, as viewed in the axial direction of the clamp structure, to facilitate assembly of the clamp structure and minimize down-time of the machine for punching out the clamp structure. To further improve its holding ability, the rear edge includes a widened portion at least near the area where the outer band portion comes to lie when the clamp is installed on an object to be fastened.

Abstract: An earless clamp structure to which elastic stretchability is imparted by one or more clamping band sections which essentially consist of lateral band portions converging toward one another from each end of the section. The lateral band portions define therebetween a window-like opening resembling an hourglass. The method in accordance with the present invention involves the step of removing certain material portions from the clamping band to obtain a section with non-rectilinear lateral band portions.

Abstract: A pipe connection in which pipe ends are provided with flared ends within the area of the joint edges, and in which a clamping ring with a U-shaped internal profile in a cross section is adapted to be tightened radially inwardly; the inner end faces of the clamping ring and the flared end faces are inclined toward the pipe axis so that the joining edges are urged toward one another in the tightened condition of the clamping ring; the clamping ring is provided with at least one plastically deformable, lug-shaped ear adapted to be tightened by contraction thereof to thereby establish a permanent connection which can be reopened only by destruction of the clamping ring; the surfaces of the clamping ring which engage with the end faces of the flarings may be further provided with means, e.g., in the form of notches, teeth, serrations or embossments to prevent rotation of the ring relative to the joint edges.

Abstract: A method and apparatus for preforming a substantially flat blank of an open clamp adapted to be mechanically interconnected near the free ends thereof into a circular clamp having a configuration at least approximately the configuration of the clamp when installed about an object to be fastened onto a relatively fixed, generally circular part; as the flat blank is being fed through the machine, it is performed into a generally circular shape with the free ends thereof axially spaced from one another; the pair of rollers feeding the blank may also be so shaped in their external contours that the lateral edges of the blank are bent out in the generally radial direction; additionally the blank is automatically stopped after an initial short feed through the machine to permit stamping of a predetermined part of the flat blank; the entire operation which is preferably pneumatically controlled is thereby automatically cyclically operated as soon as a flat blank is inserted into the machine a predetermined distance.

Abstract: A pincer-like tool for tightening clamps of the type provided with overlapping band portions each including an outwardly projecting embossment that extends generally in the circumferential direction of the clamp and offers an engaging surface disposed substantially transverse to the circumferential direction and located at the end of the embossment remote from the free end of the respective band portion.

Abstract: A pincer-like tool for tightening clamps in which two pincer-like members are pivotally connected with each other, and connected with two actuating handle members, each pincer-like member includes engaging surface means near one end thereof for engagement with a corresponding surface of the clamp and a connecting portion near the other end thereof for connection with a respective actuating handle member so that movement of the handle members and therewith of the connecting portions toward each other will cause movement of the engaging surface means toward each other for purposes of tightening the clamp; the pincer-like members are thereby assembled from standard stamped-out steel parts which include nose-like end portions forming the engaging surface means.

Abstract: A centrifugal force separator for broken grains, husks, dust and other impurities from air has a pre-separating chamber (2) with a tangential raw gas inlet (1), in which a cylindrical deflecting screen (4) and a clean gas outlet (5) axially adjoining the latter are concentrically arranged. To increase the degree of dust separation at only a slight pressure loss and in the case of an inexpensive construction, and also to enable application in return-air systems in combination with other cereal crop cleaning and processing machines, a pre-separating chamber (X) for an air circulation is provided radially outside the deflecting screen (4), and an air discharge (Y) is provided radially inside the deflecting screen (4), which air discharge (Y) is in flow connection with the pre-separating chamber (X) via air passage channels (17) in the deflecting chamber (4).

Abstract: A clamp structure, especially for use in applications in which space conditions do not permit any projecting parts such as plastically deformable ears; to permit the use of conventional pliers, the tool-engaging surfaces in the inner band portion are formed by two tab-like members pressed-out of the inner band material which engage in an aperture of the outer band material that is also provided with its own tool-engaging surface in the form of a cold-deformed embossment pressed-out of the outer band portion.

Abstract: A clamp structure with a clamping band having open ends and a mechanical interconnection of the open ends of the band that include at least two outwardly extending hooks in the inner band portion adapted to engage in apertures in the outer band portion; at least one of the hooks is a cold-deformed support hook and another one of the hooks is a generally circumferentially extending combined guide and support hook which has an inclined guide and support surface operable to initially engage with the corresponding aperture in the outer band portion so as to guide the inner and outer band portions toward one another while at the same time absorbing circumferentially directed tightening forces until the cold-deformed support hook becomes effective in also absorbing tightening forces by engagement of its abutment surface with the corresponding aperture.

Abstract: A pincer-like tool for tightening clamps of the type provided with overlapping band portions each including an outwardly projecting embossment that extends generally in the circumferential direction of the clamp and offers by its opening an engaging surface disposed substantially transversely to the circumferential direction and located at the end of the embossment remote from the free end of the respective band portion.

Abstract: A pipe connection in which pipe ends are provided with lips or flarings within the area of the joint edges and which includes a clamping ring having a U-shaped profile at the inner surface which is adapted to be tightened radially inwardly; the inner end faces of the clamping ring and/or the end faces of the lips or flarings are inclined toward the pipe axis so that the joining edges are urged toward one another in the tightened condition of the clamping ring; at least the radially outermost ring-shaped part of the clamping ring is provided with at least one plastically deformable, lug-shaped ear which is adapted to be tightened by contraction thereof and thereby establishes a permanent connection which can be reopened only by destruction of the clamping ring.

Abstract: A pipe connection in which pipe ends are provided with lips or flarings within the area of the joint edges and which includes a clamping ring having a U-shaped profile at the inner surface which is adapted to be tightened radially inwardly; the inner end faces of the clamping ring and/or the end faces of the lips or flarings are inclined toward the pipe axis so that the joining edges are urged toward one another in the tightened condition of the clamping ring; at least the radially outermost ring-shaped part of the clamping ring is provided with at least one plastically deformable, lug-shaped ear which is adapted to be tightened by contraction thereof and thereby establishes a permanent connection which can be reopened only by destruction of the clamping ring.

Abstract: A hospital bed which includes a bed frame consisting of a center bed frame section and of a head bed frame section and foot bed frame section pivotal relative to the center bed frame section; the bed frame is supported relative to a chassis by way of a first intermediate yoke-like frame structure providing pivotal movement in either direction of the bed frame about a single transverse axis; the first intermediate frame structure is pivotally connected with a second intermediate frame structure to provide tilting about a longitudinal axis; the second intermediate frame structure which consists of a parallelogram-linkage system provides for height adjustments of the bed frame and is so constructed and arranged as to permit the bed frame to assume a nearly vertical position with the foot bed frame section at the bottom without interference from the transverse bearer member of the chassis.

Abstract: A clamp structure with a clamping band and with at least one plastically deformable so-called "Oetiker" ear to be contracted to tighten the clamp structure about the object to be fastened; to assure a substantially smooth; gap-free transistion in the circumferential direction within the area of overlap, for example, of an inner and outer band portion in the area of mechanical interlock or of an insert member and corresponding parts of the clamping band, a tongue portion is provided at each free end of the inner part which is adapted to engage in a corresponding aperture in the respective outer part when the ear is contracted.

Abstract: A clamp structure especially for use in applications in which space conditions do not permit any projecting parts such as plastically deformable ears, and in which outwardly extending hooks adapted to engage in apertures are used to mechanically interconnect the clamp structure; to enable tightening of the band about an object to the fastened, cold-deformed pressed-out embossments are provided in inner and outer band portions, which extend generally in the circumferential direction so that each pressed-out embossment remains integral at least on both sides thereof, where the tool-engaging surfaces thereof are able to withstand very large tightening forces in the circumferential direction which permit a secure tightening of the clamp structure.