US812699A

US812699A - Clamp.

Info

Publication number: US812699A
Application number: US27227105A
Authority: US
Inventors: John J Stevens
Original assignee: THEODORE A LAMPTON
Current assignee: THEODORE A LAMPTON
Priority date: 1905-08-01
Filing date: 1905-08-01
Publication date: 1906-02-13
Anticipated expiration: 1923-02-13

Description

No. 812,699. Q PATENTED FEBJ13, 1906. J. J. STEVENS.

GLA MP.

APPLICATION FILED AUG.1,'1905.

(quvzntoz fffewm UNITED STATES PATENT OFFICE.

JOHN J. STEVENS, OF DALLAS, TEXAS, ASSIGNOR OF ONE-HALF TO THEODORE A. LAMPTON, OF DALLAS, TEXAS.

CLAMP.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed August I, 1905. Serial No. 272,271.

To all whom it may concern.-

Be it known that 1, JOHN J. STEVENS, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented new and useful Improvements in Clamps, of which the following is a specification.

The invention relates to an improved clamp designed particularly for use by carpenters or other mechanics.

The main object of the present invention is the production of a clamp constructed and arranged for holding doors, sash, blinds, or the like to permit work thereon without the necessity of wholly removing said articles from their supports.

The invention will be described in the following specification, reference being had to the accompanying drawings, wherein Figure 1 is a perspective View of the preferred form of my improved clamp. Fig. 2

is a side elevation of a modified form.

Referring to the drawings, it will be noted that my improved clamp is constructed wholly of suitable metal, and it is to be understood that it may be of any size and sectional dimension desired in the particular instance.

In Fig. 1 of the drawings I have illustrated my improved form of clamp, wherein 1 comprises the main rail, terminally bent at its lower end to provide a foot 2. Approximately midway of the rail I secure an arm 3, extending at aright angle from said rail and in parallel relation to and in alinement with the foot 2. The outer end of the arm 3 is thickened at 4 to provide a bearing for a clamp-screw. This screw is preferably of the usual construction, having a thumb-head 6 at one end and a swiveled bearing-plate 7 at the other end, being adapted for threaded connection with the collar 4 and of a length to permit said plate 7 to contact with the foot 2 when desired. At the end opposite the foot 2 the rail 1 is provided with an auxiliary clamp comprising an arm 8, projecting at right angles to' the rails and connected thereto a short distance from its free end. The arm 8 isin parallel relation with the arm 3 and foot 2 and is provided at its outer or free end with an upwardly-extending arm 9, which extends parallel to and in alinement with the rail 1, being of a length practically coextensive with that section of the rail 1 beyond or above the arm 8. The free end of the arm 9 is thickened to provide a collar 10, with which an ordinary clamping-screw 11 has threaded engagement, the bearing-plate 12 of the screw being designed to cooperate as a clamping member with the face of the rail 1, as fully evident from the drawings.

In Fig. 2 the construction is practically identical to that previously described in so far as the rail 13, foot 14, arm 15, and clamp ing-screws 16 are concerned. In this instance, however, the auxiliary clamping- .screw comprises an arm 17, projected from the rail 1 in parallel relation to the foot 14 and arm 15, but in a reverse direction thereto that is, from the o posite side of the arm. The arm 17 is provi ed with an upwardlyextending arm 18 at its free end, enlarged to provide a collar 19, transversely bored for the reception of a clamping-screw 20, the clamping-plate of which is designed to cooperate with the rail 13, as in the preferred form. In each of the forms described it will be noted that the main rail is preferably of T-iron and with the arms described are suitably braced to afford the necessary strength. In the modified form, however, illustrated in Fig. 2 it is necessary to terminate the web of the rail immediately contiguous the junction of the arm 17 therewith, the face-plate of the rail being offset-to provide for the cooperation with said face-plate of the clampingscrew 20 and to afford the necessary strength at this point an additional web 21 is provided in rear of said offsetface-platethat is, on the same side of the faceplate as the main clamp 15as clearly evident from the drawings.

In use the clamp arranged to cooperate with the foot of the rail is adapted to engage the casing of the door-frame, for example, while the auxiliary clamp may be readily engaged with the free edge of the door and operate to hold said door at an angle to the casing to permit cutting or other operation of the door without liability of its accidental movement.

It is to be understood. that the entire clamp of my construction, with the exception of the clamping-screw, may, if desired, be formed 7 with a single casting, whereby to provide for its economic construction.

Having thus described the invention, what is clalmed as new 1s A clamp comprising an integral body meluding a main rail terminally bent to provide a foot, an arm rejecting from the rail in spaced parallel rel ation with the foot and on the same side of the rail as the foot, a clamp-screw having threaded connection with the terminal of the arm and cooperating with the foot, a second arm projecting from the rail at the end opposite the foot, and extending from the rail in a direction 0 posite 10 to that of the foot, the terminal of t e arm being bent into spaced parallel relation with i In testimony whereof I afliX my signature I 5 in presence of two witnesses.

JOHN J. STEVENS. Witnesses:

T. J. TENNIsoN, J. E. TENNIsON;