US2167820A

US2167820A - Belt-hook press

Info

Publication number: US2167820A
Application number: US72155A
Authority: US
Inventors: Ziller Hans-Joachim
Original assignee: PAUL WEVER
Current assignee: PAUL WEVER
Priority date: 1935-03-15
Filing date: 1936-04-01
Publication date: 1939-08-01
Anticipated expiration: 1956-08-01

Description

8- 1939. HANS-JOACHIM ZILLER 2,167,820

BELT -HOOK PRESS- Filed April 1, 1936 5 Sheets-Sheet 1 g- 1, 1939- I HANS-JOYACHIMY'ZILLER 2,167,820

BELT-HOOK PRESS Filed April 1, 1956 3 Sheets-Sheet 2 1, 1939 HANS-JOACHIM ZRLLER 2,

BELT-HOOK PRESS Filed April 1, 1936 3 Sheets-Sheet 5 Patented Aug. 1, 1939 UNITED STATES PATENT DFFlCE BELT-HOOK PRESS Application April 1, 1936, Serial No. 72,155 In Germany March 15, 1935 5 Claims.

The invention relates to belt hook pressers for pressing fastener hooks into belts, conveyor bands, and the like.

According to the invention, a press including toggle levers is carried in a frame at an inclination to the base surface thereof, and is adapted to be moved and fixed on the clip holder for the fastener hooks or upon a special guide rod or on both, the toggle levers of the press being provided with oscillating pressing jaws. There is also arranged on the frame a clamping device for the belts, conveyor bands, and the like.

Owing to the press being arranged in the frame at an inclination to the base surface thereof, the introduction of the belt or conveyor band in the correct position between the jaws is ensured or facilitated. Since, furthermore, the holder for supporting the fastener hooks can be rotated through and can be held secured from radial and axial movement, an easier insertion of the fastener hooks, as also a better adaptation of the hooks to the belt or conveyor band is attained. The latter can also be firmh held by a special clamping device provided on the frame, in the correct position with respect to the press.

The actual pressing jaws are pivoted and adapted to swing or oscillate on the toggle levers of the press, so that these pressure surfaces automatically adjust themselves perpendicularly to the direction of pressure, and automatically take up the most favorable position with the different thicknesses of band, especially as the pivot of the oscillating jaws lies in the direction of the resultant force of the separate forces acting on the pressing jaws.

According to the invention, the pressing jaws have a special bearing and design. The actual pressing jaws are pivoted and adapted to swing or oscillate on the toggle levers of the press, so that their pressure surfaces automatically adjust themselves perpendicularly to the direction of the pressure and in the most favorable position with the different thicknesses of band. The pressing jaws, which are adapted to swing outwardly in their longitudinal direction are mounted in the mouths of the press levers and have a long outer and short inner limb projecting beyond the point of oscillation, so that the pressure surfaces of the oscillating jaws are adjusted automatically during'the pressing process for each size of fastener, either parallel to the surface of the band or in the most favorable direction resisting the tearing out of the hooks. For this purpose the long outer limb can be provided at its end, on the pressing side, with a slope falling towards the end of the limb. The surfaces of application of the limb jaws can, in order to permit an unrestricted swinging movement be bevelled or undercut.

The improved press is shown by way of example in the accompanying drawings, in which: 5

Fig. 1 is a section on the line l-l of Fig. 3.

Fig. 2 is a section on the line 22 of Fig. 3.

Fig. 3 is a plan view of the invention.

Fig. 4 is an enlarged fragmentary section on the line l-| of Fig. 3 and showing the press jaws fully opened and engaging a belt fastener.

Fig. 5 is a view similar to Fig. 4 but showing the jaws engaging smaller belt hooks.

Fig. 6 is a view similar to Fig. 4 but showing the jaws closed.

Fig. '7 is a view similar to Fig. 5 but showing the jaws closed.

Fig.8 is a section on the line 88 of Fig. 3.

On the frame l, is fitted a clamping device 2 for the belts, conveyor bands, and the like, in which device the belt or conveyor band end 4 which is to be provided with the fastener hooks is clamped in a suitable position and at an appropriate distance from the holder 3 which carries the fastener hooks 5. The press itself including the two toggle levers t and l and the pivot 3, is carried movably on a special guide rod 9 and hook holder 9, these two latter members being carried in the end walls of the frame. The hook holder 3 is rotatable through 90 in the end walls of the frame, its rotation being limited by a projection or pin l8 fitted on the holder 3 and which runs in an adjusting ring, collar or slot l l in the end wall, the holder 3 being secured against radial and axial shifting from the determined position, by a clamping screw ll. There are provided on the guide rod 9, notches I3 which, co-operating with a ratchet pawl l2, fix the press on the guide rod in the desired position. The inclination of the press relative to the base surface is attained by locating the guide rod in the end walls of the frame higher than the hook holder which also serves as a guide.

The pressing blocks or dies I 4' are mounted and adapted to pivot in the longitudinal direction of the press limbs, in the jaws l8 of the limbs 65, 1'. Each pressing block or die is pivoted in a jaw it in such a manner that it presents a longer outer limb l9 projecting beyond its point of oscillation Hi and a shorter limb 20. 50 On the pressure side, the outer limb l9 has at its end a short bevel 2i facing towards the end of the limb. The surfaces of application 22 of the limb jaws it in which the blocks oscillate can also be bevelled or undercut. The pressure trans- 55 mitted to the pressing blocks by the concerted movement of the

press limbs

6, 1 acts in a uniform manner on the fastener hooks whether the latter are large or small. Since the blocks [4 in the jaws l8 of the limbs 6, I can oscillate somewhat, they fit themselves in an advantageous manner to the pressure surface when the connecting hooks are pressed together. It does not matter whether the connecting hook is small or large. Figures 4 and 5 show the effect when connecting hooks of various sizes are used. The large hooks of Fig. 4 cause an outward opening of the oscillating blocks I4, while the latter open inwardly when smaller hooks are used, as shown in Fig. 5. Figs. 6 and 7 show the hooks of Figs. 4 and 5 after they have been pressed into belt 4. It can be seen that in both instances, the blocks M are not in contact with the striking faces 22 but have a flat contact with the pressure surfaces. Because of the bevels 2| on the longer ends of the limbs IQ of the blocks l4, these parts do not touch the belt so that the pressure effect of the blocks can be effective only in the area of the connecting hooks.

I claim:

1. In a belt hook press, a frame having a transverse guide member, a belt clamp carried by the forward part of said frame parallel to said guide member, a belt hook holder carried by the frame between said guide member and belt clamp and parallel thereto, a belt hook press slidably mounted on said guide member to move parallel to the belt hook holder, said press including jaws and presser blocks carried thereby and extending forwardly'of the belt hook holder, and means for selectively positioning said press on the guide member.

2. In a belt hook press, a frame having a transverse guide member, a belt clamp carried by the forward part of said frame parallel to said guide member, a belt hook holder carried by the frame between said guide member and belt clamp and parallel thereto, a belt hook press slidably mounted onsaid guide member to move parallel to the belt hook holder, said press including jaws and presser blocks carried thereby and extending forwardly of the belt hook holder, said guide member being provided with a series of notches spaced longitudinally of the member, and a pawl pivoted to the press and engageable selectively in said notches.

3. In a belt hook press, a frame having a transverse guide member, a felt clamp carried by the forward part of said frame parallel to said guide member, a belt hook holder carried by the frame between said guide member and belt clamp and parallel thereto, a belt hook press slidably mounted on said guide member to move parallel to the belt hook holder, said press including jaws and presser blocks carried thereby and extending forwardly of the belt hook holder, means for selectively positioning said press on the guide member, and guide means on said press engaging said hook holder to prevent tilting of the press on said guide member.

4. In a belt hook press, a frame having a transverse guide member, a belt clamp carried by the forward part of said frame parallel to said guide member, a belt hook holder carried by the frame between said guide member and belt clamp and parallel thereto, a belt hook press slidably mounted on said guide member to move parallel to the belt hook holder, said press including jaws and presser blocks carried thereby and extending forwardly of the belt hook holder, said guide member being provided with a series of notches spaced longitudinally of the member, a pawl pivoted to the press and engageable selectively in said notches, and guide means on said press engaging said hook holder to prevent tilting of the press on said guide member.

5. In a belt hook press, a support, a pair of pivotally mounted jaws slidably mounted on said support for transverse movement with respect to a belt, presser blocks each pivotally connected to a respective jaw to swing on an axis extending transverse said jaw, and means carried by said support for securing an end of said belt thereto in a position for the attachment of belt hooks thereto.

HANS-JOACHIM ZILLER.