US678043A - Portable clamp. - Google Patents

Description

No. 678,043. Patented July 9, 19m. J. A. SCOTT, n. WARREN & H. w. ASH. PORTABLE CLAMP.

(Application filed Jan. 21, 1901.)

(No Modsl.)

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UNITED STATES X PATENT OFFICE.

' JAMES ALBERT sooTT, OF BOSTON, R LPH L. WARREN, OF NEwToN, AND HORACE w-. ASH, OF CAMBRIDGE, MASSACHUSETTS, AssIeNoRs To WARREN BROTHERS COMPANY, or BOSTON, MASSACHUSETTS.

PORTABLE CLAMP.

SPECIFICATION forming part of Letters Patent No. 678,043, dated July 9, 1901.

Application filed January 21, 1901 Serial No. 44,066- (No model.) 7

To all whom it may concern.- Be it known that we,J AMEs ALBERT SooTT, residing at Boston,in the count of Sufiolk, RALPH L. WARREN, residing at ewton, and HORACE W. ASH, residing at Oambridge,-in

the county of Middlesex, in the State of Massachusetts, citizens of the United States, have invented a new and useful Improvement in Portable Clamps; and we do hereby declare 10 that the following is a full, clear, and exact description, reference being had to the accom panying drawings, forming a part of this specification, in explaining its nature.

.The invention relates to a portable means or device for holding a metal or other guard for any work made of artificial stone, concrete, or similar plastic material, like curbs,

steps, &c., and during the construction or 3 'j'ustable horizontally toward and from the erection thereof and in such a manner that the concrete or other material may be placed and manipulated around or about the guard and without being disturbed by the guard grading and holding means.

The invention comprises supports in the :5 nature of posts which are driven into-the earth or otherwise supported outside the line of the curb, step, or other work and upon each of which is mounted to project horizontally therefrom a clamp of peculiar construction for holding the metal or other guard, and

this clamp is universally adjustable with respect to the post or support, in that it is both vertically and horizontally adjustable upon the same. Any suitable means may be used for this purpose, and we have illustrated a system of screws, collars, and set-nuts as one means of carrying the invention into effect.

We will now describe the invention in conjunction with the drawings, wherein-- portion of a completed curb, representing also in section the curb-guard and showing in elevation the guard grading and holding device. Fig. 2 is a view in plan thereof.

5 Referring to the drawings, D is a post, preferably of metal, in the nature of a stake, in that it has a pointed lower end and an exposed upper end for receiving blows of a hammer or mallet. It is provided with a screwthread 01 of any desired length, and it is Figure 1 is a view in vertical section of a.

adapted to be driven into the earth outside the curb and at the requisite distance from it. Generallya number of posts are arranged in line. Upon the post is a collar or head 0, which has a hole slightly larger than the size of the post, so that it may slip up and down upon it, audit is moved upon the post or is permitted to be moved thereon and is located in any desired position thereto by means of the set-nuts Z, one above it and one below it,

and which screw upon the threaded section of the'post. The head or collar 0 has a lateral extension 'inwhich is a horizontal hole 0 of a size to receive the shank a of the'clamp.

. The shank has a threaded section a, upon which are the set-nuts K, one on each side of the extension 0. Byloosening, the nuts the clamp-shank and clamp are movable or ad post, and by tightening the nuts the clamp- 7o shank and clamp are located in their adjusted position. At the outer end of the clamp shank is a clamp for holding the metal or other guard s, a metal guard being shown. It is preferably made of iron or steel, and it is composed of the part g, which is fast to the shank, and has at its outer end a downward extension g, provided at its lower end with an upward-extending lip 9 the lip form-- ing a rest for the lower edge of the guard e and the face 'i forming a gage against which the face of the guard adjacent to its lower edge may come into contact. I) is the other member of the clamp. It is attached to the member 9 by a headed bolt m, which passes through holes in both, and has the look-nut m, which serves to clamp and lock the part b to the part g. Its inner end b rests upon the part g, its outer end extends upward and furnishes the face 12*, and its downward-bent 0 end the lip b gwhich closes behind'the upper edge of the guard e, while the face 6 acts as a bed for receiving a large part of the outer face of the guard, which is held with some force against it and the face v by the lips I) 5 and g of the clamp when the two parts of the clamp are locked forcibly together. It will be seen that the clamp is at the extreme end of its shank and removedv from its supporting-post and that it is shaped to support and hold the guard principally by the surface of the guard which will be exposed after the curbing is completed and so that the part of the guard which is inclosed by the concrete or other plastic material of which the curb is to be constructed is held isolated from all other supports and in a manner not to interfere with the placing or manipulating or working of the concrete or plastic material in the formation of the curb and about such portions of the guard only. Portions of the narrow lips 11 g of the clamp are in a position between any part of the guard and the concrete, and one or both of these may be removed before all the concrete has been placed about the guard. The clamp is constructed so that its upper portion may be removed from the lower portion before the placing of the final body of concrete against the back of the guard, and thus continuing the finish of the upper surface of the curb to the edge of the guard,

The device may be adjusted to gage the accurate position of the guard before the guard has been clamped to it. This becomes possible by making the face g of the clamp member g parallel to the axis of its shank a and by using therewith straight-edges, levels, or Ts for locating it, allowance being made for the shape and height of the guard. Its horizontal position is controlled by means of the nuts 7t 7c. The guard may then be placed upon the lower lip of the clamp, the upper member of the clamp adjusted upon it and bolted to the lower member, and the guard will then be held with its outer surface, upper and lower corners, and its inward-extending web in the position which they should bear to the edge of the curb when built up and completed, and the construction being rigid the guard is held in position without danger of displacement by knocks or jars during the construction of the work.

It will be seen that the guard is firmly held in place independently of the concrete, facing-boards, or any other support than the posts and that the facing-boards may be removed from the face of the work before the final set of the concrete has taken place, which permits the face of the curb to be immediately troweled to a finish. This is an advantage as compared with the old method of holding the guard,which required that the concrete must set hard before the facingboards could be removed and which then required to be finished by plastering instead of cement troweling, the more desirable finish. It will also be seen that the clamp-arm and clamp may be turned upon the supporting post or standard to any required extent.

Having thus fully described our invention, we claim and desire to secure by Letters Patent of the United States 1. A portable device for holding and gaging a guard for concrete curbs, steps or other similar concrete work, comprising a standard or post, a horizontal clamp arm or shank mounted upon the standard or post to be vertically adjustable thereon and also to be horizontally movable with respect to it, and a guard-holding clamp at the end of said horizontal clamp arm or shank.

2. In a device for holding a guard for a concrete curb, steps or other similar concrete work during its construction, consisting of posts or standards set away from the front line of the curb, step or other concrete work to be constructed, an arm extending horizontally from each of said posts toward the line of said curb, step or work, and a guardholding clamp at the end of said arm for holding the guard during the construction of the curb, step or other work, and which device is removable from the front of said step, curb or other work to permit it to be immediately finished, before it is set, by troweling.

3. A device for holding a guard for a concrete curb, step or other work during its con struction, having a post or standard, a horizontal shank vertically movable upon the post and also horizontally movable with respect thereto and a clamp carried by said arm, the clamp having a horizontal face and vertical face 2'- by means of which it may be set to the line of the guard before the guard is placed in the clamp. v

4. In a device for holding a guard for a concrete curb, step or other work, a clamp for holding the guard during the construction of the curb, step or other work having a lower member provided with a rest for the guard and a removable upper member having a seat and hook for the guard, and means for clamping the two members together whereby the lower member may continue to act as a support for the guard after the concrete of the curb or step has been combined with it but before the final finishing of its upper surface and adjustable supporting means whereby said device is upheld and may be adjusted both vertically and horizontally.

5. In a device of the character specified, the combination of the post having the threaded section cl, a collar or head mounted upon the post to be movable thereon and having an extension at one side provided with a horizontal hole, nuts for adjusting the clamp upon the post and looking it in any desired position, a threaded shank extending through the horizontal hole in the collar or head, nuts for locking itin an adjusted position to the collar or head and a guard-holding clamp at the outer end of said horizontal shank.

6. In a device of the character specified,

the adjustable shank at having at its outer end the integral member of a clamp provided with a face 11 and a rest g and also with a removable section of a clamp having the face b the hook 19 the foot I) and a bolt or nut for locking the two clamp members together,

the upper clamp member extending beyond zontal plane with regard to it, and a guard- 10 the free end of the lower clamp member, as clamp carried by said horizontal arm or and for the purposes set forth. shank.

7. The combination in a device of the charr J. ALBERT SCOTT. acter specified of a standard or post, a hori- RALPH L. WARREN. zontal shank or arm mounted thereon to be HORACE W. ASH. vertically adjustable in relation thereto and In presence ofalso to be horizontally adjustable with respect ALBERT G. WARREN,

to it and further to be movable upon a hori- LAURA A. DAGGETT.

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