US2574421A

US2574421A - Paper tacking machine

Info

Publication number: US2574421A
Application number: US8711A
Authority: US
Inventors: Steinberg Heinrich
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-02-16
Filing date: 1948-02-16
Publication date: 1951-11-06
Anticipated expiration: 1968-11-06

Description

Nov. 6, 1951 sTElNBERG 2,574,421

PAPER TACKING MACHINE Filed Feb. 16, 1948 INVENTOR.

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' the tacking elements.

Patented Nov. 6, 1951 Unrrsp' STATES PATENT OFFICE 2 Claims.

The present invention relates to a paper tacking machine, wherein the papers that are to be clipped or tacked together are passed between two wheels provided with wedge-shaped teeth or Wheels having letters thereon, thus tacking or crimping paper goods or sheets together by high pressure.

The essential feature of the present invention or improvement as hereinafter described lies in the resilient mounting of one of the tacking elements.

The drawings show a front view (Figure 1) and a section through the machine (Figure 2) and a top view (Figure 3) as well as two views of long and half fiatsprings (Figures 4 and 5).

This machine is efiicient because it has no friction at all and provides the utmost elasticity of In addition to these two advantages the machine may be adjustable to provide whatever pressure may be desired. I have found by experiments in course of years that the present improvement enables the greatest number of paper sheets to be securely tacked together by increasing the elasticity of one of the tacking elements by employing additional springs as an adjustment. The latter permits a temporary as well as a permanent crimping together.

The tacking or crimping machine essentially consists of a body I to be clamped on a table IS with the clamping screw 3. The bottom tacking or crimping wheel 2a is mounted on a fixed stationary spindle 4a and is rotated by means of a crank handle ll. Both spindles 4a and 4b are parallel.

The mounting of the top fastening element 21) consists of several long fiat springs 5 and additional short springs l4 being slotted and flat which bear against the flat faces provided on the spindle db of said top element, the said springs being slotted at the middle to clear the top fastening element. Upon these flat long or between these long flat springs are mounted short ones at each side M. On top of the fiat springs are over mounted two springs (spiral springs), in addition to the fiat springs 6 at each side or end. The springs are fixed altogether by the screw la and the adjustment knob lb. The adjustment knob regulates the pressure necessary to efiect a permanent or a preliminary crimping of paperstuff together as desired. Figure 4 shows one of the long fiat springs, Figure 5 a short one to be mounted between or on top of the flat springs.

To prevent sliding of the spindle 4b while the crank handle is being turned, I have provided in this machine a pin on each side 8 slotted into the both sides of the flat springs. The spiral springs of the spindle in connection with the fiat springs increase the elasticity. In order that the invention may be better understood, it will now be described with reference to the accompanying drawings as follows:

Figure 1 shows a front elevational view of the machine. In Figure 1 there are shown flat springs 5, body I, handle I I, clamping screw 3,

fixing screw 1a, adjustment knob lb, spiral springs 6, upper spindle 4b and upper wheel 2b.

The handle is fixed with the bottom spindle which is bearing the bottom wheel and has to be turned clockwise. The upper wheel is engaged with the bottom wheel under high pressure of the different springs and crimps paper inserted.

Figure 2 shows a section through the machine. The upper element is engaged with the bottom element and a table slotted is provided to carry the paper. A shaped channel 15 guides the paper sheets straight on. The pins 8 on each side fix the fiat springs or so called flexible transversal beam in their position during operating and prevent moving or sliding of them.

Figure 3 is a top View of the machine, Figure 4 shows one of the fiat springs slotted in their middle for the upper wheel and slotted at each side for the fixing pins, Figure 5 shows half flat springs for use between the long springs or upon them to increase the pressure in connection with the spiral springs.

Having now described my several improvements of the machine and in what manner the same is to be formed I claim the following:

1. A paper tacking machine comprising a body, a spindle on the body and a crimping wheel on the spindle, a second spindle parallel to the firstidentified spindle and a second crimping wheel on the second spindle in circumferential engagement with the first-identified crimping wheel, and resilient means for positioning and retaining said second crimping wheel in contact with the first-identified crimping wheel comprising posts on the body on opposite sides of the circumference of said second crimping wheel, a plurality of fiat springs having ends loosely engaging the posts and having central apertures therein adapted to receive said second crimping wheel, said second spindle having a position against and beneath the lowermost fiat spring, compression spring means between the ends of the fiat springs and the posts, adjustable means on at least one of the posts adapted to vary the tension of the compression spring engaging said post, and a REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Number Name Date Parsons Mar. '7, 1922 Ross Oct. 23, 1928 Von Vago et a1. Jan. 1, 1929 Mason May 22, 1934 FOREIGN PATENTS Country Date Great Britain of 1935 Germany of 1933