US1191424A - Drawing-board support. - Google Patents

Description

H. T. HQLLINGER. DRAWING BOARD SUPPORT.

APPLICATION FILED MAR. 19. 1915.

1 1 9 1 ,424. Patented July 18, 1916.

HARVEY T. HOLLINGER, CONCORDIA, KANSAS.

DRAWING-BOARD SUPPORT.

Specification of Letters Patent.

Patented July 18, 1916.

Application filed March 19, 1915. Serial-No. 15,524.

To all whom it may concern Be it known that I, HARVEY T. HOLLIN- GER, a citizen of the United States, residing at Concordia, in the county of-Cloud and State of Kansas, have invented certain new and useful Improvements in Drawing-Board Supports, of which the following is a specification.

This invention relates to drawing-board supports, and one object of the invention is to provide a drawing-board support especially adapted for use in school shops where drafting must ordinarily be done on the work-benches.

A further object of the inventionis to provide a drawing-board support which may be readily adjusted to support a drawing-board in avposition most convenient to the draftsman, and a still further object of the invention is to provide a drawing-board support which will be simple in construction, easily manipulated and may be manufactured at a low cost.

The invention is shown in the accompanying drawings, and consists in certain novel features which will be hereinafter first fully described and then more particularly pointed out in the appended claims. 7

In the drawings: Figure 1 is a perspective View of a drawing-board support constructed in accordance with my invention and showing the same applied to a work bench; and Fig. 2 is a vertical sectional View, a drawing-board being indicated in position upon the support.

In carrying out my invention, I employ a standard 1 which is constructed with a longitudinal slot 2 and is flat-sided, as clearly shown in the drawings, so that its of a vise 3 and thereby secured in position at the front of a work bench to project upwardly above the same. To the upper extremity of the standard 1, I rigidly secure a cross bar 4, and a second cross bar 5 is provided below the said fixed cross bar 4 The lower cross bar 5 is recessed or notched on its rear face, as shown at 6, so that it may fit closely to and around the standard 1 and have sliding engagement therewith, the side walls of the notch or recess fitting against the side edges of the standard so that pivotal movement of the cross bar about the standard will be prevented. The said lower cross bar or arm 5 carries a bolt 7 which passes through the slot 2 of the standard lower end may be inserted between the jaws and is equipped with a suitable nut 8 whereby the said cross bar or arm may be clamped to the standard at any point of'the same.

At the ends of the cross bar 5 are brackets or supporting arms 9 which are secured to the cross bar by hinges 10 whereby the said supporting arms may be swung outwardly and forwardly or may be swung backwardly so as to lie between the cross barsd and 5 and in the plane of the same, the lower ends of the supporting arms 9 being plane faced so asto restsquarely upon the upper edge of the lower cross bar, as will be readily understood. To the upper extremities of the supporting arms 9, I secure a rest'll which extends between the said arms and has its in-' ner face rabbeted, as shown at.12, so as to provide a ledge to receive the drawing instruments. The drawing-board, indicated at 13, rests upon the upper ends of the arms 9 and upon the upper cross bar 4 with its lower edge against the rest 11.

Adjustable connections between the upper ends of the supporting arms 9 and the upper cross bar 4 are provided, and in the drawings these connections are illustrated as chains 14: having their lower ends secured to the supporting arms near the upper extremities of the same and their upper ends adapted to engage over hooks 15 onthe up per cross bar. It will be understood, of course, that by engaging different links of the chains over the hooks 15, the upper ends of the supporting arms 9 will beheld more closely to or farther from the upper cross bar 4 and, consequently, the drawing-board may be arranged at different angles.

From the foregoing description, taken in connection with the accompanying drawings, it will be seen that I have provided a very simple and efficient drawing-board support by which the drawing-board may be disposed at any position desired by the draftsman, and which will be capable of attachment to a work bench so that drawings may be readily'and expeditiously made from models or other objects upon thebench or measurements conveniently taken from the drawings for comparison with articles being manufactured. By engaging the lower portion of the standard 1 in the vise, as shown, the board may be supported at a proper height for use by the student who is standing. If the device be arranged so that the vise engages the standard between the cross bars, the board will be disposed for use by a seated draftsman. By properly adjusting the chains 14 and the movable cross bar 5, the support may be readily fitted to drawing-boards of various sizes so as to maintain them in proper working position.

The device may be readily removed from a work bench or applied to the same and will occupy very little space when not in use so that it may be stored out of the way conveniently. The construction also facilitates the shipment of large quantities of the boards within a small compass, as the arms 9 may be swung close to the plane of the standard and the device thus brought into a flat condition so that a number may be readily arranged in piles.

Having thus described the invention, what is claimed as new is 1. A drawing-board support comprising vertically upon the standard, a drawingboard rest mounted upon the said movable cross bar to swing about the same, and an adjustable connection between the said rest and the fixed cross bar.

2. A drawing-board support comprising a standard, a fixed cross bar thereon, a second cross bar adjustably mounted upon the standard below the fixed cross bar, supporting arms hinged to and rising from the said lower cross bar, a drawing-board rest fixed to and extending between the free ends of the said supporting arms, and adjustable connections between the said supporting arms and the fixed cross bar.

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

HARVEY T. HOLLINGER.

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

' Washington, I). C.

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