US714761A - Scaffold-horse. - Google Patents

Description

Nin. 714,7l. l Patented um 2,1902Vv J. s. TILLEY. scAFFoLn HonsefAppuccion med Jap. 27, 1902.)

(No ModelL) v 2 Sheets-#Sheetv il.

No. 714,764. Patented nec. y2, 1902..

l .L s. T|LL|:Y-.

scA'FFoLn Hanse.

(Alplicmn med Jan. 27, 1902.)

(un Moduli.) 2 sheets-sheet 2 Nirnn STATES ATENT FFME SCAFFOLD-HORSE.

SPECIFICATION forming' part of Letters Patent No. 714,761, dated December 2, 1902'.

`Application led January 27, 1902. Serial No. 91,507. (No model.)

To @ZZ whom t may concern:

Be it `known that I, J oEN S. TILLEY, a citizen of the United States, residing at Tatervliet,in the county of Albany and State of New York, have invented certain new and useful Improvements in Scaold-Horses; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which s `1893, issued to Frederick C. Lovejoy.

In the accompanying drawings I have shown a single standard, it being understood that two or more may be used in completing i the scaold-horse.

Figure 1 is a side elevation of the standard. Fig. 2 is a` view at right angle thereto, showing a brace in a different position and the beam omitted. Fig. 3 is a perspective view of a clamping and supporting plate. Fig. 4 is a detail perspective view of the end of the brace member. Fig. 5 is a perspective view of the plank-supporting bracket. Fig. 6 is a similar view of a modified form. Figs. 7 and 8 are detail views of one of the adjustable blocks. Fig. 9 is a detail view of a clamp, showing a modified construction 5. and Fig. l0 is a view of a clamp,showing the same engaging the edge of a board.

In the drawings, AArepresent the two legs ofa standard having extensions ct ct' adjustable thereon. and of a well-known type. The upper ends of the legs are separated and are permitted a slight movement toward and from each other, as in the Lovejoy construction, and the opposing faces of the standards are provided withclamping-plates B, having the sloping connecting portion B', secured directly to the inner faces of the upper ends of the standards, and the ledges or flanges b, arranged vertically, and which, as heretofore, serve to embed themselves into the sides of the beam when the parts are clamped together. The upper end of the plate is provided with the horizontal flange b', having hooks b2 for receiving the lugs 7c on the brackets K, presently to be described. The clamping-plate B consists also of a base or supporting plate B2, which extends laterally short distance, constituting -a supportingledge. This supporting portion is braced by the webs b3, extending from the outer ends thereof up to the upper end of the plate B'. These webs are provided with penetrating teeth, as shown in Fig. 3. Below the ledge B2 is a flange B3, extending downward and designed to it against the face of the leg, and between the flange and the ledge suitable supporting webs or brackets B4 are placed or formed for strengthening the same. By the above-described construction it will be observed that an extended support for the beam is provided beyond the standard in opposite directions, and inasmuch as these clampingplates are made rigid with the upper ends of the legs they form effective supports for the beyond the clamping-faceof the plate for a beam and also increase largely the clampingsurface. The construction, however, while not necessarily requiring additional clamping-bolts, may be formed with suitable openings in the `ends of the flange B3, through which the clamp-bolts C C2 pass, the central main clamp-bolt C passing through at the usual point and also through the standard. These bolts C C C2 are conveniently arranged below the ledge. This, however, is not essentially material, as vthey may be diiferently located. When the beam is placed between the clamp-plates, the bolts are drawn up and the beam rigidly clamped in position, and owing to the extended support and clampingsurface the legs and beam are held rigidly in their proper angular position, thereby enabling the scaffold-horse to be used without the diagonal brace when occasions require.

Braces K, with the usual ears 7o" and the supporting-web 7a2, the end of which rests against the outer face of the leg, all of which are similar to the Lovejoyconstruction, are provided, and on the outer ends of these brackets I have placed adjustable clampingblocks L, the same consisting conveniently of a metal block of rectangular formation having an opening Z therein formed with inclined upper and lower walls, the edges of which constivIco tute biting or clutching points when the block is tilted back or upward. These blocks are also formed with channels Z', through which the web k2 may pass, thus permitting a wide range of movement of the block `on the face of the bracket. To prevent the block from escaping from the bracket a small pin Z2 is employed. Any other convenient means may be substituted for this pin. As shown in Fig. 2, a plank X is placed on the brackets, the beam being omitted, and in View of the construction of the adjustable clamping-blocks L they are permitted to be moved up to the edge of the plank. The clamp-bolt C is then tightened, drawing the clamping-blocks onto the edge of the plank, and thus clamping the plank inV place. In lieu of the construction shown` in Fig. 5 and above described it is evident that the end of the bracket may be turned up to form a clamp-block, as shown at fm in Fig. 6.

D designates the diagonal brace, its lower end having a metal saddle D', formed with ears d2 and a seat d2. This saddle is supported directly on the end of the brace by a suitable strap D2, as shown in dotted lines, Fig. 4, and the ears d2 embrace the opposite edges of the strap, thus preserving the proper position of the saddle without the necessity ot' bolts or rivets passing through the same. In the seat d3 is placed the pivot-pin E of the bracket or casting E', secured to the crossbar E2 of the standard. The upper end'of the brace D is provided with a clamp F, which is conveniently, although not necessarily, formed with a rigid jaw and a movable member, the latter consisting of a set-screw j. In this connection I wish it understood, however, that any desirable form of clamp may be used. In mounting the clampF on the brace I provide a bracket G, having a pin g thereon, which may be cylindrical in cross-section or angular, as shown in Fig. 9, and on this pin is mounted the clamp, which latter is provided at its base with a hub f', extending in opposite directions therebeyond and which is sleeved over the pin g, the same being held in place by a suitable nut and washer or other convenient means. The bracket G is provided with ears which embrace a support CZ on the brace and is secured in place by a pivot d', so that the bracket may have an upand-down movement around the pivot.

By the construction thus described it will be observed that the clamp may be turned into a vertical position, as shown in Fig. l, to grasp the vertical sides of the beam, or it can be turned into a horizontal position, as shown in Fig. 10, to grasp the top and bottom of the beam or plank. This movement is permitted either by the cylindrical construction of the pin gor bythe angular construction, as shown in Fig, 9, in which latter case, however, the clamp is required to be removed from the pin and thereafter replaced after turning it part way around. In the connection of the brace D with the cross-bar E2 it has been usual to have the same rather loose, so that the brace could be moved laterally some considerable distance. By having such a connection the brace may be employed for grasping the edge of the flat plank in a manner as shown in Fig.2. It is of course to be understood that the pivotal connection between the clamp supporting bracket and brace may be omitted and, further, that other forms of pivotal connection for the clamp may be substituted for those shown.

When in use, the beam is clamped between the standards, its lower edges resting on the ledges B2. The brace D is then 'adj usted and the beam is clamped by the clamp F. When, however, it is desired to economize space by omitting the brace D, the clamp thereof may be loosened and the brace folded back or removed.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

l. In a scaold-horse, the combination with a standard comprising two upright members, of clam ping-plates secu red on the inner faces of the members opposite each other and each comprising a securing-section, a supportingledge extendingin opposite directions beyond the uprights, and clamping-webs extending from the ledge to the securing portion.

2. In a scaffold-horse, a clamping-bracket comprising an inclined securing portion, a horizontal supporting-ledge extending on op- IOO posite sides beyond the securing portion, a

iange below the ledge, and clamping-webs arranged in the angle between the securing portion and the ledge.

3. In a scaffold-horse, the combination with a standard and its clamping instrumentalities, of a brace connected to the standard, a clamp at the outer end of the brace, and means for connecting the clamp to the brace to permit of an adjustment of the clamp from a vertical clam ping position to a position forclamping the beam at a transverse angle to the vertical. v

t. In ascalTold-horse, the combination with a standard and its clamping instrumentalities, of a brace connected thereto, and capable of lateral movement, a horizontally-arranged pin on the brace, extending longitudinally therefrom, and a clamp movably secured to said pin; substantially as described.

5. In ascaold-horse, the combination with a standard, of clamping instrumentalities thereon, a brace connected to the standard, a horizontally-arranged pin pivotally secured to the brace, and a clamp movably secured to said pin; substantially as described.

6. In a scaffold-horse of the character described, the combination with a standard, of a brace member having a saddle at its end formed with separated ears on opposite sides and a strap adaptedto fit between the ears and extend around the saddle.

7. In a scaffold-horse of the character described, the combination with a standard hav- IIO `ing a pivot-pin secured thereto, of a brace 4 member having a saddle at its end adapted to fit said pivot-pin, anda strap passing around said pivot-pin and the saddle; substantially as and for the purpose described.

8. In a scadold of the character described,

.l the combination with a standard having a pivot-pin secured thereto, of a brace member having a saddle at its end adapted to t said pivot-pin, a strap passing around said`pivotpin and the saddle, and ears on the saddle engaging the edges of said strap; substantially as and for the purpose described.

9. In a scaifold-horse, the combination with a standard, of a brace connected thereto, a pin carried by said brace movably connected thereto, and a clamp movably secured to said pin; substantially as and for the purpose described.

l0. In `a scaold, the combination with a standard comprising two upright members, of clamping-plates secured on the inner faces i j of the members opposite each other, oppostely-arranged supporting-ledges on the inner faces of the plates, and devices at each end of the plates for forcing the plates toward each other to clamp a beam or the like resting on the supporting-ledges therebetween;

substantially as described. A

11. In `a scaffold-horse, the combination with standard members, of plank-supporting brackets thereon, means at the outer ends of the brackets projecting upwardly therefrom` for engaging the edges of the plank, means for causing the brackets to approach to clamp 13. In a scaffold-horse, the combination with standard members, of beam-supporting devices thereon, plank-supporting brackets, means at the outer ends of the brackets projecting upwardly therefrom for engaging the edges of the plank, operating instrumentalities for clamping both the beam-supporting devices and plank supporting brackets, a brace projecting from the standard members, and a clamp movably connected to said brace and arranged to be swung upwardly to engage a beam or inwardly into engagement lwith one edge of the plank; substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN s. TILLRY.

Vitnesses:

GRAS. L. PATTERSON, HARRY S. BILEs.

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