US385056A

US385056A - Paper-punch

Info

Publication number: US385056A
Authority: US
Publication date: 1888-06-26
Anticipated expiration: 1905-06-26

Description

(No Model.)

J. C. JENSEN.

PAPER PUNCH;

PatentedJune 26 sa llla ilustran @raras 'PATENT -Charon .roi-Ine. JENSEN, or calorico, ILLINOIS. s

`PAPER-mmol-l.

SPECIFICATION forming part'of Letters Patent No. 385,056, dated June 26, 1888. Application filed January 7, 1888. Svrial No. QGIHOI. (No model.)

lo being in section. Fig. 2 is a sectional elevation. Fig. 8 is a section online x :c of Fig. 1, showing the parts in position for holding the papers to bebound preparatory to punching a hole through them; and Fig. 4 is a similar i5 view showing the parts in position when punching a hole.

As heretofore constructed, machines for punching holes through sheets of paper preparatory to binding said sheets together with :5o metallic paper-fasteners are open to the objection that after the hole has been punched the knife or blade cannot be readily withdrawn, but will remain in the hole formed until the `paper has been pulled off from such blade or knife by hand, andv in so doing the papers are liable to become slightly disarranged, rendering the insertion of a Vpaper-fastener more or less difficult by reason ofl the non-registering of the holes formed in the different sheets.

The object of my invention is to o` rcome this difficulty by making the withdrawal of the perforating knife or blade after the formation ofthe hole automatic and certain, whichI ac- .coniplish by the employment of two coiled springs of unequal strength, the location and arrangement of which, together with their relations to the other parts of the machine, being hereinafter specifically `described and pointed out in detail.

plate havingits edges .turned down to form a wall, A', which rests upon the table or other support, and raises the buse A sufficiently above the surface of the table to'alloW the blade or knife to pass through the holea with- 'out its pointcoming 'in contact with the table or support. A guide Wall or ledge, A", is formed on each side of the base A and in line with each other, which guide'walls are for the 5o purpose of placing'the ends of the sheets 'of peper to be bound against, in order that the holes to be made may all be at the saine dis- In the drawings, A represents'a base orbed tance from the end. At the end of the base or bed plate A, as shown, are two cups or reccptacles, A", f or holding 4paperfasteners, which cups or receptacles lie within the space formed bythe supportingwall A.

ll is an arm or bracket secured at its lower end to the base or bed A, between the two cups or receptacles A, by screws b, as clearly shown inv l3ig.2. The outer and projecting `end of this arm or bracket has formed therewith, in the construction shown, a socket, B.

C is a tube within the socket B', andvsliding up and down therein. A slot, c, is formed in the side of the tube, through which passes a screw, b', secured in the socket B', for limiting the movement of the tube. V

'D is a coilpedspring around thetnbhekone end o1' which bears against a collar orflange, C, on the upper end of the tube C, and the other end against a shoulder in the socket B, as shown.

E is a rod passing through the tube Oand socket B', and, as shown, is screw-threaded on its upper end to receive a head, E,.'and at -its lower end -has secured thereto a perforating blade or knife, In the side of the rod Eis formed a groove, c, which lics under the slot c, and into this groove e the end ofthe pin with .the lower end ol' the groove prevents withdrawal of the rod.

F is a coiled spring around the rod E, one i I end of which rests against thehcad E and the other end against a shoulder l'orlnyd in the tube C, as shown. l

Y G is a head, wider at its lower end than at its upper, so as to present abroad surface to rest upon the sheets of paperto be perforated and hold them firmly while lthe hole is being made; and bythis construction the head can be -used to g`ve theusual blow to the fastener after are placed on thc bcdlor base A, with their few Soi ' or screw b" passes, and by coming in contact icc ward ends against the guidewalls A, press- `ure is applied to the head l', andin consequencpe of the spring D being weaker than the spring F such spring D will be compressed, 'allowing the tube C to he forced down and carrying with it the head G, as shown in Fig. 3, to bear on the paper and hold itin place. By bearing down harder onthe head ll or strikingit a sharp blow the knife or blade E will be forced down, as shown in Fig. 4, to pass through the sheets of paper. After a hole is punched and the pressure on the head E released the knife or blade is withdrawn from ,the hole ,just formed bythe action of the coiled spring F around the rod E, and the head G is raised out ofreontact with the surface ofthe upper sheet of paper by the action of the spring D, which carries np the tube C, to which the, head G is secu red. Other holes or perforations can then be formed in the same manner the same distance from the top of the sheets as the one first formed by moving the sheets sidewise and having their top or forward the guide-walls A.

The spring D is of alarger diameter and has fewer coils than the spring F; and hence such spring D will alwaysbe'compressed and allow the head G to be forced down vagainst the paper before the spring Fhas begun to compress in forcing down the knife or blade. If desired, the base A and arm or bracket D can ,be formed in one piece instead of heilig secured together as shown.

edges against After a lhslrnur has been inserted through the sheets of paper and the prongs bent back as usual they' can be flattened close against the` paper by placing the sheets of paper so that tne fastener comes under the projecting head G and forward of the hole a and giving asharp blow en the head E. This aetionwill not affect the blade or knife E", as such blade or knife passes through the vhole a, and its downward movement is stopped by the pin or screw-b and groove c, as above described, to prevent contact with the table or other support on which the machine rests.

What I claim as new, and desire to secure by Letters Patent, is as follows:

l. The tube C, having secured thereto the head G, in combination with the rod E, carrying a perforating knife or blade, and springs Dand F,of unequal strcngtl1 ,for automatically withdrawing the knife or blade aftera perfora,-

vtion has been made, substantially as specified.

2. The bed or base A, having supporting- -wall A and ,hole a, arm B, provi-ded with a socket, B', and limit-pin b', tube C, having slot c,and holding-head G,in combination with the rod E,` having groove e and blade or knife E", and coiled springs D and F, of unequal strength, substantially as and for the purposes specified.

JOHN C. JENSEN.

\Vi i ncsses:

Anunn'r II. ADAMS, HARRY T. JoNns.