US1118199A - Adjustable supporting device for movable objects. - Google Patents

Description

G. A. HAWK. ADJUSTABLE SUPPORTING DEVICE FOR MOVABLE OBJECTS.

Patented Nov. 24, 1914.

APPLICATION FILED 00T.14, 1913.

Zuzfnewes UNITED STATES PATENT OFFlCE.

CHARLES A. HAWK, OF KANSAS CITY, MISSOURI.

ADJUSTABLE SUPPORTING DEVICE FOR MOVABLE OBJECTS.

Application filed October 14, 1913.

To all whom it may concern:

Be it known that I, CHARLES A. HAWK, a citizen of the United States of America, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Adjustable Supporting Devices for Movable Objects; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will'enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The objects of the invention are: first: an adjustable base or support for movable objects, such as tables and other household furniture, ladders and the like, and'such an adjusted position obtained as will be irrespective of the declensions of the floor or ground; second, to enable the movable object to be angularly adjustable, in a novel, expeditious manner; and third: to afford a combined adjustable legv and brace, to movable objects.

The invention consists in the novel construction and combination of parts, such'as will be first fully described and then specifically pointed out in the claims.

In the drawings: Figure 1 is an isometric view of a table, embodying the invention. Fig. 2is a detail, isometric view of the angularly adjustable supporting body and base for the table top. Fig. 3 is a longitudinal vertical, sectional, view of one of the table-adjusting members. Fig. 4 is a transverse, verticahsectional View taken on the line m-m, on Fig. 3. Fig. 5 is an isometric view of a step ladder, showing the invention applied thereto; and Fig. 6 is a detail view,

of the rack and support for a cooperating ladder adjustment.

' Similar numerals of reference indicate corresponding parts in all the figures of the guiding surface 16, which retains movable objects from leavingthe table top. Beneath Specification of Letters Patent.

Patented Nov. 24, 1am.

Serial No. 795,092.

the side members 14, of the frame 12, are

rectangular clampingbox frames or body 17, of the requisite width and having longitudinal, parallel side plates 18, spaced apart the requisite distance, and end plates 19, the upper edge portions of said sides and ends of the box frames being secured fixedly to the lower surface of the sides 1-1, of the frame 12, of the table top, the ends of which box extend to a point approximately onefourth the distance inwardly, from the line of the ends 15, of the box frame 12, of the table top. The sides 18, of the clamp box frame 17, are made of yielding material, and within said sides are inserted the curved or arched plates 20, which are of equal width to the space between the inner surfaces of said sides 18, of the box clamp, the ends ofthe curved plates 20 .passing in con-v tact with the lower, inner surfaces of the ends 19, of the said box frames 17 and to a short distance below the lines of said ends. Through opening-23, in the side plates 18 of each box, extends a clamping screw 24-, upon one end of whichscrew is a head 25, bearing upon the outer surface and one side 18, of the box frame, and upon the other end of the screw is a clamping nut 26, hearing upon the outer surface of the opposite side plate 18,-of said frame, the screw passing beneath the lower surface of the plate 20, so that said screw acts simply to bind the sides of plates 20, which maybe adjusted in any degree desired.

30 indicates the adjustable clamping box frames, constituting the base ofthe table, and being the same in width as the. box

frames .17, the adjustable box 30 being shorter in length than the fixed box frames 17, and approximatelv that of the ends15, of thetable. The adjustable box frames 30 are placed in. position beneath the said ends 15, of the table, and the lower end portions of the respective adjusting plates 20 placed flatwise in position against the outer surfaces of the inner plates 31, which form the sides of the respective adjustable box frames 30, and secured thereto at points close to the-lines of the outer ends 32, of said box frames by the rivets 33.

Within the box frames 30 are combined,

table supportingsuperposed leg and brace curved plates 34,. which are of the same width as the plates 20,- the ends of which plates 34 extend downwardly in contact with the lower, inner surfaces of the. ends members of said frames mounted slidingly on the convex surfaces of said arched plates and clamping devices acting to control the sliding movement of said parallel box frames upon said plates.

l. An adjustable base for table tops comprising sets of upper and lower rectangular box frames, the lower set being provided with yielding side members and parallel arched plates upon the upper convex surface of which plates the lower surfaces of the ends of said lower set of the box frames are slidingly mounted, and clamping screw bolts extending through said yielding side members beneath the lines of the inner concave surfaces of said plates, the upper set of parallel box frames having yielding side members extending at right angles to the lower set of box frames and arched plates supporting the upperbox frames the lower ends of whicharched plates are bent at an angle and connected with the inner surfaces of the side members of the said lower set of box frames.

5 A supporting base for the adjustment of movable objects, comprising a yielding arched plate having feet, and a rectangular box frame having yielding side members and the lower surfaces of the end members bearing upon the convex surface of the arched plate and clamping means which act to clamp said yielding side members to the outer surface of the said yielding arched plate.

6. An adjustable body support for movable objects comprising parallel box frames having yielding side members supporting said body, arched plates within said frames having the end members of said frames bearing upon the convex surfaces of said arched plates, clamping bolts extending through said yielding side members beneath the lines of the concave inner surfaces of said plates and clamping nuts thereon and yielding foot supports for the ends of said arched plates.

CHARLES A. HAWK. Witnesses ROBERT O. MCLVIN, ANNIE F. GREEK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. G.

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