US2272473A

US2272473A - Paper fastening machine

Info

Publication number: US2272473A
Application number: US333349A
Authority: US
Inventors: Norman S Noll
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-05-04
Filing date: 1940-05-04
Publication date: 1942-02-10
Anticipated expiration: 1959-02-10

Description

Feb. 10, 1942. N NQLL 2,272,473

PAPER FASTENING MACHINE Filed May 4, 1940 INVENTOR.

ATTORNEY.

Patented Feb. 10, 1942 UNITED STATES PATENT l OFrP'lCE l.12 Claims.

A'This invention relates to improvements in Vpaper fastening machines of the crimping type as shown in my application for patent, Serial No. 282,834, filed July 4, `1939, and wherein sheets of paper are crimped between toothed dies in a hand `press and thereby locked together without the use of staples, clips, or other fastenngs.

vThe present invention constitutes an improvement over the one shown in my above identied application in that it Vembraces the novel and advantageous features as follows:

1. A -spring link arranged between the operating handle and the lever for moving one of the dires-into contact with the other die, whereby the dies will lbe yieldably engaged so as to prevent damage thereof and objectionable mutilation of the paper when pressure `is app-lied through the handle, link and lever for forcing the dies vtogether in a paper'crimp-ing operation.

2. A construction and arrangement of the operating 'parts of the machine providing a self contained fully assembled unit which as such may be lreadily removed from Vthe housing vtherefor 'Without becoming disassembled, by simply removing two pins, and as easily inserted in place.

3. Two springs for controlling the operation of the machine in suchmanner that one spring serves the purpose of returning the operating lever `to and maintaining vit in its normal elevated position and the dies separated, while the other spring serves as a lresilient and pressure relieving operating link as aforesaid. v

l4. yA novel construction and arrangement of =the-operating mechanism Ywhereby the same will be comparatively inexpensive, consist of but few parts, and prove reliable in performance over long periods of use.

5. A novel stop means embodied in the operating mechanism for stopping the movement of the operatingmembers andthe movabledie when a predetermined maximum crimping pressure is applied to the dies through the flexible spring link.

With the foregoing and other objects in view,

ymy invention .consistsinthe particular construe tion of combination and relative arrangement of the parts and Velements as shown in the accompanying drawing, described in the following r specification and nally defined in the claims Ahereto appended. It is to be understood that minor changes as to size, vproportion and arrangement of parts and elements of the invenltion may belmade as requiredwithout departing 4being vdownwardly offset.

from -the speed and scope Vof the invention as set forth in the claims hereof.

Fig. 1 represents a vertical sectional view of a vmachine embodying my invention, with the parts `shown in the yposition assumed vbefore a crimping operation is carried out;

Fig. 2 is a vertical sectional view similar to Fig. 1 Abut showing the parts -in full lines as during the crimping operation and in dashed lines at .the .completion ofthe crimping operation as when maximum pressure is applied throug-h the die, taken'on line 2 2 of IFig. 3;

Fig. 3 is a fragmentary end elevation of the machine with the handle and other parts in section;

Fig. '4 is a fragmentary top plan -view of one of the dies;

Fig. 5 is a fragmentary longitudinal section of the die shown -in Fig. 4; and

Fig. 6 is an enlarged fragmentary l longitudinal section of the two dies as when in operation.

One embodiment of my invention as shown in the accompanying drawing comprises a-bodyincluding a base 6 having a housing 'l' integral with one end, the housing and base being constructed to form aslot into whichpaper S is inserted in order that it may be crimped and locked together by means of crimping dies 9 and It.

The die 9 is set in a recess Ii in the base whereas the die I0 is carried by a lever `|72 in a recess 3 in oneend thereof and adapted to be engaged With-the die 9 upon movement of said lever. It should be noted that each of the dies has similar teeth I4 extending transversely the full width thereof and in planar relation to one another whereby when the dies are brought together, all of the ,teeth thereof will uniformly and simultaneously mesh, or in other words, mesh, with the paper sheets rplaced therebetween. The

Adetailed.construction of the teeth does not form subject vmatter of the present invention and is more ,particularly brought out and claimed in my application hereinbefore identied.

It should be noted that the lever I2 is pivoted between its ends in the housing by means of a removable `pivot pin I5. The end of the lever opposite gthat carrying the die Ill, is pivotally connected as at I6 with an arcuate spring metal link I1, in turn pivoted at I8 to an-operating handle I9. This handle is pivoted in the housing by means of a removable pin 20. The pivot I8 is intermediate the ends of the handle whereas the pivot 2U is between pivot I8 and the inner end of the handle, said inner end .Anopeningl inthe housing provides for extension operation of the handle for rotating the lever for applying the die I to the die 9. A coil spring 22 is mounted on the pivot and has its two ends respectively engaged with the handle and the top of the lever for holding the handle and die l0 in elevated position and restoring them to such position.

To operate the machine, paper sheets S are inserted between the dies as shown in Fig. 2 and the operator depresses the handle whereby through the spring link l1, the lever I2 is rocked so as to cause the die lll to be moved to initial meshing relation to the die 9, the parts being then substantially in the position shown in full lines in Fig. 2. The link l1 is not flexed when bringing the dies together upon said initial movement of the handle, or in other words, when the handle is moved from the full line position shown in Fig. l to the full line position shown in Fig. 2.

To complete the crimping and paper fastening operation, the operator further depresses the handle, for example, from the full line position to the dotted line position as seen in Fig. 2. During this movement of the handle, the arcuate spring link which, it is noted, is substantially semi-circular, will be flexed due to the fact that the dies are engaged with one another and therefore the dies are yieldingly forced together in such manner that the desired paper crimping action takes place without damaging the dies or paper sheets. It should be noted that if the link were simply a rigid connection of the ordinary type, the dies might be damaged and the paper objectionably mutilated should the operator apply heavy pressure on the handle. By arranging the machine so that the flexing of the spring takes place during the crimping action, the spring, for example, flexing an extent as indicated by the dashed lines in Fig. 2, the pressure on the dies is relieved and the damaging of the dies and objectionable mutilation of the paper are prevented.

As a further safeguard against applying damaging pressure to or through the dies, the inner end of the handle is provided with a lug or projection 23 which when the handle moves into the dashed line position shown in Fig. 2, will contact the spring link adjacent its upper pivoted end in such manner as to provide an effective stop for limiting the movement of the handle and associated parts. This projection will engage the spring link in such manner that the said link will not flex but positively stop movement of the handle.

It should be noted that the lever, link, handle and spring, together with the pivot pins connecting the link with the handle and lever respectively, constitute an assembled unit which may be readily and easily removed from the housing by withdrawing the pivot pins I5 and 20. Spring loaded detents 25 engage in grooves 26 in these pins for holding them in place. When these pins are Withdrawn, this unit may be lifted outI of the housing and will not fall apart or become disassembled. Such removal may be necessary from time to time in order to clean the die IU or replace it or replace any other part of said unit. The unit may be restored to its assembled position in the housing with equal facility.

One of the important features of this invention is that of employing crimping dies in which all the teeth uniformly and simultaneously en gage or become meshed while the operating pressure is applied through a heavy spring link. This link is suiilciently rigid to insure an effective pressure between the dies but at the same time yields or ilexes to avoid damage to the dies or too great a pressure and subsequent mutilation of the paper. This spring link arrangement, in combination with a spring for returning the handle to its raised position and so maintaining it, constitutes a decided improvement in this art and makes for a simple, inexpensive, and reliable machine.

What I claim is:

1. In a paper fastening machine: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, a spring metal link connected at its ends with said lever and handle for rocking the lever on movement of the handle, and a link engaging portion on said handle for engaging and flexing said link whereby the lever carried die will yieldably contact the fixed die.

2. In a paper fastening machine: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, and a spring link connected with said lever and handle for rocking the lever 0n movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die.

3. In a paper fastening machine: a body, a paper crimping die xed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the xed die, an operating handle pivoted on said body, and an arcuate spring link connected with said lever and handle for rocking the lever on movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die.

4. In a paper fastening machine: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the' lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, and a substantially semi-circular spring link connected with said lever and handle for rocking the lever on movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die.

5. In a paper fastening machine: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, and a spring link connected with said lever and handle for rocking the lever on movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die, and a lug on said handle disposed to engage the spring link and stop the movement of the handle, link and lever when the handle is depressed a predetermined extent.

6. In a paper fastening machine: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted .between its ends on said body', another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, and an arcuate spring link connected with said lever and handle for rocking the lever on movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die, and a projection on the handle for engaging the link adjacent the point of its connection with the handle when the latter is depressed a predetermined extent for stopping the movement thereof.

7. In a paper fastening machinez'a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a lever pivoted between its ends on said body, another crimping die mounted on the lever for movement therewith into and out of paper crimping relation to the fixed die, an operating handle pivoted on said body, and a spring link connected with said lever and handle for rocking the lever on movement of the handle, and yieldingly forcing the lever carried die into contact with the fixed die, and a spring for returning the handle to elevated position.

8. A paper fastening machine comprising: a body, a paper crimping die fixed on said body so that sheets of paper to be fastened together may be laid thereover, a movable paper crimping die for cooperation with the first-named die, a movable support for the second-named die mounted on said body, a handle for moving said support to move the die thereon into and out of crimping relation to the first-named die, and a tension member forming a connection between said handle and said movable support and operable for yieldingly forcing the movable die into crimping relation to the other die.

9. In a paper fastening machine, a body, a fixed paper crimping die thereon, a movable paper crimping die, and means on the body for moving the movable die into and out of crimping relation to the other die, including a handle and a tensioned member operatively connecting said handle with said movable die and arranged whereby said member will flex and relieve the pressure on the dies when the handle is operated to force the dies together.

10. A paper crimping machine comprising: a stationary die member and a movable die member between which paper is gripped in a cripping operation, an operating handle and a tension member operatively connecting said handle with said movable die member whereby when said die members are effective for crimping paper, the inherent tension in said tension member will urge the dies from crimping position and means independent of said tensioned member for urging said handle to normal position.

11. A paper crimping machine comprising: a frame having a base with a stationary die mounted in crimping position thereon, a movable die member cooperating therewith and having a fulcrum rearwardly of said stationary die member, an operating handle pivotally mounted on said frame and having an axis spaced from said die member, an arcuately formed and normally rigid resilient link connecting said movable die member with said handle, a spring for yeldably holding said handle and movable die in normally inoperative position, said spring being further tensioned when said handle is depressed in a crimping operation, and said link being tensioned during further movement of the handle for operatively engaging said dies with the paper to be crimped, the tension of said link serving to urge` said dies apart at the completion of an operation. 12. A paper crimping machine comprising: a frame having a base with a stationary die mounted in crimping position thereon, a movable die member cooperating therewith and having a fulcrum rearwardly of said stationary die member, an operating handle pivotally mounted on said frame and having an axis spaced from said die member, an arcuately formed and normally rigid resilient link connecting said movable die member with said handle, a spring for yieldably holding said handle and movable die in normally inoperative position, said spring being further tensioned when saidhandle is depressed in a crimping operation, and said link being tensioned during further movement of the handle for operatively engaging said dies with the paper to be crimped, the tension of said link serving to urge said dies apart at the completion of an operation and means associated with a portion of said handle engageable with said link and forming a stop for the movement of said handle.

NORMAN S. NOLL.