US1838410A - Paper clamp - Google Patents

Description

Dec. 29, 1931. H. R. KITTS ET -AL PAP ER CLAMP Filed Feb. 10, 1951 Patented Dec. 29, 1931 NI ED-STATES PATE T OFFICE HARRY R. KITTS AND CHARLES K. BONG, OF GREEN BAY, WISCONSIN W rerun cLAMP application n February 10, 1931. Serial no. 514,851.

This invention relates to improvements in clamping devices, and pertains particularly to aclamp designed for securing papers together. T I

The primary object of the presentiinvention is to provide a simple but strong and durable clamp which maybe easily and quickly roughly adjusted to the'proper size for holding a body such, for example,"as' a 0 number of paper sheets or the like, and" which may then be drawn to a final tight grip upon the body by a novel securing means which also acts to'retain the clamp in gripping condition. l f Another object of the invention is to provide a clamp which will fa s efliciently grip and hold one or two sheets of paper as a stack of substantial'thickness. I T 'f The invention broadly contemplates the provision of a pairof relatively long me bers crossed and pivotally connected intermediate their ends, one of the members being formed to provide an arcuatetoothed surface concentric with the pivotal connection between the members, which'toothed surface is engaged bya dog pivotally mounted upon'the adjacent other member. .-The pivotal mounting for this dogis in theform of an eccentric with which a latch'isconnected so that by depressing thelatch the dog will be forced forwardly and will impart a slight "oscillatory movement'to' the member with which it engages; at its free end. Each of the members is providedlwith 5 a laterally extended finger at its free end and the fingers of one, member are disposed in opposed relation to the fingers of the other member so that when the members are oscillated in one direction these fingers come together to grip a}sheet" or otherbody, or a number, of sheets,"therebetween."

The invention will be best understood from a consideration of the ffollowing detailed description taken in connection with 5 the accompanying drawings forming part of this specification, with the understanding, however, that thein'vention is not confined to any strict conformity with the showing 7 ofthe drawings but may be changed or modi fied' so long as such changes or modifications portion of a modified form of the clamp mark no material departure'from the salient features of the invention as expressed in the appended claims. 1

In the drawings:

F igurel is a view in side elevation of the clamp embodying the'present invention."

F1gure 2 is a view in top plan of the same,

a portion thereof being in section.

FigureS is a view inside elevation of a structure. V i

Figure 4: is a sectional view taken on the line 4-31: of Figure 3. 1

Referring more particularly to the drawings, wherein like numerals of reference indicate corresponding parts throughoutthe several views, Figure 1 illustrates the pre ferred form of'the present invention.

The invention, as illustrated in this figure,

consists of two relatively long fiat arms lndicated by the numerals 1 and2, which are disposed in crossed relation with their flat faces in contact. These members are crossed at points substantially midway between their ends and a pivot'pin or rivet 3 connects them togethersothatthey may be oscillated on this pin to movethe ends of the membersrelative to one another. Each of the members has at each end a laterally extending grippingfifihger or aw 4; each ofthese aws belng of arouate cross-section, as shown, and the convex faces of the jawsof one member are in opposed relation to the convex surfaces of the jaws of the other member so that upon oscillating the members in the proper manner these opposed jaws mayhavetheir convex.

surfaces brought into contacting relation. By providing jaws of this cross-sectional design it will be seen that an amplecontjact surface is provided for engaging a bodydisposed between the jaws, no matter whether the body isthickor thin; g One of the members as, for example the memberrl is enlarged arcuately at one edge and concentric-withfth'e pivot pin 3, as indicated at5. "This arcuate edge of the member 1 is formed to'provide a series of teeth 6.

,The other arm or member 2 -haspivotally mounted therein from the outerface thereof, one end of a stud? which has formed integral therewith an eccentric cam 8, one face of which is in contact with the arm or member 2 and prevents looseness or movement of the a stud 7 in the aperture in the arm 2.

The cam 8 engages in an aperture in one end of a pawl 9, the other end of which engages the arcuate toothed edge portion of the adjacent arm 1.

Secured to the stud at the outer end thereof is a lever 10 which, when the clamp jaws 4 are separated to their fullest extent, extends substantially parallel with the arm 1. A suitable spacing washer 11 may be located be tween the lever and the eccentric cam portion 8 of the stud so as to provide the necessary clearance between the pawl and lever.

With the foregoing description, taken in association with the accompanying drawings, it will be readily seen that in applying the clamp one side of one or a number of sheets or other articles is first located between the jaws 4 and the jaws may then be brought together to engage opposite faces of the article or articles therebetween by oscillating the arms 1 by means of the hand or fingers. After the jaws have in this manner been made to more or less firmly grip the articles therebetween a firm grip of the clamp upon the articles may be obtained by depressing the lever 10, which operation will shift the pawl 9 longitudinally and thus, through the engagement of its free end with the teeth 6, force the jaws into a firmer engagement with the bodies therebetween. This cam actuated pawl also serves to locate the aws in gripping relation. In order to release the articles held between the jaws 4 it will be readily seen that the lever 10 is first swung upwardly or in the reverse direction after which the engagement of the pawl 9 with the teeth 6 will be sufficiently loose to permit of its being disengaged by the fingers.

In Figure 3 there is shown a slightly modified form of the structure above described. In this form of the invention the rotatable stud 12 has the eccentric 13 formed upon the outer end thereof and there is formed in this outer end a socket 14 in which may be engaged the correspondingly formed end 15 of a key 16. This key 16 takes the place of the lever member shown in the form first described, and by its use it will be seen that the rotation of the stud 12 and the eccentric cam 13 may be effected to shift the pawl 17 which is carried at oneend upon the cam. This pawl, at

its free end, engages the toothed. arcuate portion 18 of one of a pair of arms 19, the same as does the pawl 9.

From the foregoing description it will be readily appreciated that with a clamp of the character herein described one or a number of papers or other fiat articles may be easily, quickly and firmly gripped and held together, and the clamp may be readily released for the 1 insertion or removal of sheets.

Having thus described our invention, what we claim is:

1. A clamp of the character described, comprising a pair of elongated members, a pivotal connection between said members remote from one end thereof, a jaw carried by each member, said jaws being designed to be brought into abutting relation, pawl and ratchet means adapted to shift said members and aws relative to one another and secure them in a set relation, and cam means for actuating the pawl and maintaining it in shifted position.

2. A clamp of the character described, comprising a pair of elongated members, a pivotal connecting means between said members, a carried by' each member and adapted to be moved into engagement with the other jaw, an arcuately arranged series of teeth carried by onemember concentric with the pivotal connection, a pawl carried by the other member and having engagement with said teeth, and cam means for shifting said pawl to effect movement of the member engaged by the free end thereof.

3. A clamp of the character described, comprising a pair of elongated members, a pivotal connecting means between said members, a jaw carried by each member and adapted to be moved into engagement with the other jaw, an arcuately arranged series of teeth carried by one member concentric with the pivotal connection, an eccentric cam carried by the other member, a pawl having an aperture receiving said cam and having one end engaging said teeth, and means for rotating said cam to effect movement of the pawl and the member engaged by the free end thereof.

4. A clamp of the character described, comprising a pair of elongated members, means for pivotally connecting the members together so that the free ends thereof may be moved relative to one another, a jaw carried at the free end of each member and projectin-g laterally therefrom, said jaws being of arcuate cross section and arranged to have the convex faces of those of one member brought into contact with the convex faces of those of the other member, and latching means for securing said members against relative movement after oscillating the same to brlng the aws against opposite faces of a body disposed therebetween.

5. A .clamp, comprising a pair of elongated members crossed intermediate their onds, a pivot pin connecting said members, a laterally extending jaw at each end of each member, the jaws of one member being arrangedto be brought into contact with the jaws of the other member, an arcuate series of teeth. formed upon one member concentric with said pivot, a stud plvotally carried by the other member, an eccentrlc cam carried by said stud, a pawl having one end engaging said teeth and having an aperture therein receiving said cam, and means for oscillating said cam to actuate the pawl relative to the teeth engaged thereby. i

6. A clamp, comprising a pair of elongated members crossed intermediate their ends, a pivot pin connecting said members, a laterally extending jaw at each end of each member, the jaws of one member being arranged to be brought into contact with the jaws of the other member, an arcuate series of teeth formed upon one member concentric with said pivot, a stud pivotally carried by the other member, an eccentric cam carried by said stud, a pawl having one end engaging said teeth and having an aperture therein receiving said cam, and a lever connected with said cam to efiect oscillation thereof.

7. A clamp, comprising apair of elongated members crossed intermediate their ends, a pivot pin connecting said members, a laterally extending jaw at each end of each'member, the jaws of one member being arranged to be brought into contact with-the jaws of the other member, an arcuate series 2570f teeth formed upon one member concentric with said pivot, a stud pivotally carried by the other member. an eccentric cam carried by said stud, a pawl havingone'endengagingsaid teeth and having an aperture therein receiv- I ing said cam, a key, and means for coupling the key with the outer end of the stud.

8. A clamp of the character described, comprising a pair of elongated members, a pivotal connecting means between said mem- 5 bers, a jaw carried by each member and adapted to be moved into engagement with the other jaw, an arcuately arranged series of teeth carried by one member and concentric with the pivotal connection, a pawl piv- 40 otally mounted on the other member and further mounted for longitudinal movement thereon, and means for shifting the pawl longltudmally of its supporting member against said teeth to effect movement of the other member.

9 A pivot clamp of the character described, comprising a pair of elongated'flat members arranged in crossed relation, pivotal connecting means between the members, a

series of teeth formed along an edge of one member on an arc concentric with the pivot therefor, an elongated pawl pivotally mounted upon the other of said members against the outer face thereof and having an inturned forward end in engagement with said teeth,

said pivotal support for the pawl constituting a cam whereby longitudinal movement of the pawl may be obtained, a stud formed integral with said cam, and a lever mounted upon said stud for effecting rotation of the cam.

In testimony whereof we hereunto aflix our signatures. V

HARRY R. KITTS. CHARLES K. BONG.

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