US831845A - Clamp. - Google Patents

Description

No. 831,845. PATENTED SEPT. 25, 1906.

- E. R. ERIGKSON.

CLAMP.

APPLICATION FILED 1113.24, 1906.

mwno ATTORNEYS UNITED STATES PATENT OFFICE.

ERICK R. ERICKSON, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO HENRY WYNELL, OF NET/V YORK, N. Y.

CLAMP.

Specification of Letters Patent.

Patented Sept. 25, 1906.

To all whom, it may concern:

Be it known that I, ERICK B. ERICKSON, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county and State of New York, have invented a new and Improved Clamp, of which the following is a full, clear, and exact description.

This invention relates to clamps.

The object of the invention is to produce a clamp of simple construction, presenting clamping-faces the distance between which may be readily adjusted to receive objects of different thicknesses.

The invention is especially useful for the purposes of a joiner or cabinet-maker to hold members which are being glued together.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings, formin a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the clamp, representing the same as applied to a supporting-rail. Fig. 2 is a vertical longitudinal section through the parts shown in Fig. 1, and Fig. 3 is a cross-section taken on the line 3 3 of Fig. 1.

Referring more particularly to the parts, 1 represents a portion of a rail. The clamp comprises a saddle-bracket 3, presenting a horizontal plate 4, formed near its extremities into seats 5, which rest upon the upper face of the rail, as shown, the said plate 4 being formed preferably integrally with an upwardly-projecting flange 6. The saddlebracket 3 is preferably reinforced by a rib or web 7, as shown. At a suitable point on the body of the saddle-bracket and on each side thereof I attach links or levers 8 by pivot-pins 9. These levers hang downwardly at the sides of the rail and are formed at their lower extremities into two ears 10 and 11, the said ears being provided with laterally-displaced eyes receiving pins 12 and 13. The pin 12 affords means for attaching a shoe 14 to the ear, the said shoe consisting substantially of a plate the inner face whereof rests against the lower face of the rail 1, as shown. To the pin 13 is attached a second shoe which lies upon the upper face of the rail. This shoe 15 is formed with integral extensions which are disposed at the sides of the rail and depend downwardly, so that the shoes 14 and 15 constitute stirrups hung upon the upper member which is to be clamped. The lower members of the shoe 15 attach pivotally to the pins 13.

Adjacent to the saddle-bracket 3 I provide a saddle 17, which is formed with a single seat 18, which rests upon the upper side of the rail 1. The forward extremity of-this saddle 17, which lies nearest to the bracket 3, is formed into a hub 19, through which passes a clamping-screw 20. Just beneath the hub 19 the saddle 17 is pivotally attached, by means of a suitable pin 21, to a lever 22, which is similar in construction to the link 8 already described, presenting a pair of ears 23 and 24 at the lower extremity thereof, as shown. By means of a suitable pin the ear 23 is connected with a shoe 25, which is similar in construction to the shoe 14 and disposed adjacent thereto. A second shoe 26 is provided similar to the shoe 15, the same having extensions 27, which are pivotally attached by a suitable pin to the ear 24. The shoes 25 and 26 present substantially -flat clamping-faces which come against the side of the rail.

Upon the extremity of the clamping-screw a swivel-head 28 is provided, which abuts against the substantally' vertical outer face of the flange 6 of the saddle-bracket 3.

It should be observed that the shoe 15, which is connected with the saddle-bracket 3, lies in a recess 29, which is formed between the seats 5.

Vith the construction described it should be understood that if the clamping-screw 20 be tightened so that it tends to force apart the saddle-bracket 3 and the saddle 17 these members tend to slide upon the upper face of the rail 1, so that the pins 9 and 21 will be moved in the direction of the arrows. In this way a powerful force is exerted upon the links 8 and 22. In this way the shoes 14 and are forced upwardly, while the shoes 15 and 26 are pressed downwardly, so that the rail is firmly clamped between these parts, as will be readily understood. By reason of the relative length of the links or levers 8 and 22 as compared with the arm or distance between the pins 12 and 13 and the corresponding pins of the link 22 it should be understood that a very powerful leverage is obtained, enabling the parts to be pressed together with great force.

The pieces to be clamped together will be applied between the saddle-bracket 3 and the swivel-head 28. Either of these members may be readily slid along on the rail 1 to make a space of any size to receive the pieces to be clamped and also enabling the work-to be held at any desired point on the rail. When the clamping-screw 20 is screwed up to clamp the work, the force which it exerts also operates to hold the saddle-bracket and saddle rigidly on the rail. 7

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a clamp, in combination, a pair of shoes presenting clamping-faces adapted to press opposite sides of a rail, a second pair of shoes presenting clamping-faces and adapted to press opposite sides of the same rail, levers pivotally attached respectively to said pairs of shoes, and a connection between said levers affording means for clamping all of said shoes simultaneously.

2. In a clamp, in combination, a saddlebracket and a saddle adapted to rest upon the same face of arail to be clamped, apair of shoes adapted to rest upon the aforesaid face, a second pair of shoes adapted to rest upon the opposite face of the rail, links pivotally attached to said shoes and extending transversely of the rail, said links being pivotally attached to said saddle-bracket and said saddle, and means for forcing said saddle-bracket and said saddle apart.

3. In a clamp of the class described, in combination, a saddle-bracket presenting seats on the under side thereof, adapted to rest upon one face of a rail and presenting an opening between said seats, a shoe lying in said opening and having extensions extending transversely of the sides of the rail, a second shoe adapted to press the side of the rail opposite said saddle-bracket, links attached pivotally to said second shoe and to said extensions of said first shoe, said links being 5 pivotally attached to said saddle-bracket,

face of a rail, links pivotally attached to said saddle-bracket and said saddle and extending to the opposite side ofthe rail, shoes pivotally attached to said links and adapted to press the side of the rail opposite to said saddles, other shoes resting on the face of the rail adjacent to said saddles and having extensions extending to the opposite side of said members, said extensions being pivotally attached to said links, and means for forcing said saddle-bracket and said saddle longitudinally of the rail and in different directions.

5. In a clamp, in combination, a rail, a pair of saddles slidably mounted on said rail, shoes engaging the faces of said rail, links connecting said saddles with said shoes and constituting levers for applying said shoes to said rail, and means for clamping the work between said saddles, whereby the outward pressure of said saddles a plies said clamps.

6. In a clamp, in com ination, arail, a

pair of saddles slidably mounted on said rail,

shoes engaging the faces of said rail, links connecting said saddles With said shoes and constituting levers for applying said shoes to said rail, and a clamping-screw carried by one of said saddles and adapted to hold the workagainst the opposite saddle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ERICKR. ERICKSON.

Witnesses:

HENRY WYNELL, F. D. AMMEN.

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