US956096A - Adjustable drawing-table. - Google Patents

Adjustable drawing-table. Download PDF

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Publication number
US956096A
US956096A US51173309A US1909511733A US956096A US 956096 A US956096 A US 956096A US 51173309 A US51173309 A US 51173309A US 1909511733 A US1909511733 A US 1909511733A US 956096 A US956096 A US 956096A
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Prior art keywords
drawing board
pin
sleeve
rod
set screw
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Expired - Lifetime
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US51173309A
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Adolph Hoffman
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Individual
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Priority to US51173309A priority Critical patent/US956096A/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B27/00Drawing desks or tables; Carriers for drawing-boards

Definitions

  • My invention relates to the improvement of adjustable drawing tables and the objects of my invention are to provide in conjunction with a table or other supporting body, improved means for supporting a drawing board at a desired angle; to so construct my improved drawing board supporting means as to admit of the board being rotated independently of the supporting table top and to produce other improvements the details of which will be more fully pointed out hereinafter.
  • Figure 1 is a front elevation of a portion of a table top showing a drawing board supported therefrom by my improved means, said drawing board being shown in the horizontal position
  • Fig. 2 is a side elevation of the same showin the drawing board supported in an inclined position.
  • 1 represents the horizontal top member of a table of any suitable character and 2 represents separated table clamping brackets, each of which preferably comprises a vertical member 2 from which upper and lower arms 2 and 2 project at right angles.
  • the lower clamping arm 2 has a threaded engagement with the usual clamping screw 3 whlch is adapted to be turned into clamping engagement with the underside of the marginal portion of the table 1, the upper clamping jaw 2 being in engagement with the upper side of said table.
  • With each of the members 2 of each of the clamps is formed a bearing projection 4 and within these bearing projections are rigidly secured the ends of a horizontal rod 5.
  • a sleeve 6 On the rod 5 is rotatably and slidably mounted a sleeve 6, with the central enlargement of which is formed an arm 7 which terminates in a reduced pin extension 7.
  • the sleeve 6 is adapted to be locked in the desired position upon the rod 5 by means of a suitable form of set screw 8 which passes through a threaded opening in said sleeve.
  • bracket 9 represents a drawing board which has ailixed to its underside on opposite sides of its center, a pair of bracket plates 10, the latter having depending therefrom, suitable brackets or keepers 10.
  • socket arms 11 represents a coupling and bearing memher, which is in the nature of an upright tubular body 11 from opposite sides of which project at right angles therewith, socket arms 11". Secured in each of these socket arms is the inner end of a short horizontal rod section 12, the outer end of which is connected with the depending bracket 10 of the drawing board.
  • the upright member 11 of the bearing and coupling device receives loosely the pin extension 7 of the arm 7 heretofore described.
  • the drawing board may through the turning of the sleeve 6 on the rod 5, be turned or moved to a desired inclination with relation to the table (see Fig. 2). It is also obvious that by loosening the set screw 12, the drawing board 9 may be rotated or its bearing member 11 whirled or rotated upon the pin 7 thus providing means for turning the drawing sheet to the position most desirable for the use of the draftsman. It is also evident that when the set screw 8 is loosened, the sleeve 6 may be moved horizontally upon the rod 5, thus carrying or moving the drawing table when desired to a new position at the right or left, in which position the board may be held by tightening said set screw 8.
  • WVhat I claim is:
  • a bracket body comprising clamps, a rod extending between said clamps, a rotatable sleeve on said rod, said sleeve having a pin projecting therefrom, and a set screw for retaining said sleeve in engagement with said rod, of a drawing board, brackets depending therefrom, a tubular bearing member rotatably mounted on said pin, rods connecting said bearing member and brackets, and a set screw for limiting the rotary movement of said bearing member on said pin.

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Description

A; HOFFMAN.
ADJUSTABLE DRAWING TABLE.
APPLICATION FILED we. '1. 1009.
956 696 Patented Apr. 26, 1910.
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Mara/1% aNDniw u GRAHAM co Puom-uwomuwcns wnsmramon D C ADOLPH HOFFMAN, OF COLUMBUS, OHIO.
ADJUSTABLE DRAWING-TABLE.
Specification of Letters Patent.
Application filed August 7, 1909.
Patented Apr. 26, 1910. Serial No. 511,733.
To all whom it may concern.
Be it known that I, ADOLPH HOFFMAN, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Adjustable Drawing- Tables, of which the following is a specification.
My invention relates to the improvement of adjustable drawing tables and the objects of my invention are to provide in conjunction with a table or other supporting body, improved means for supporting a drawing board at a desired angle; to so construct my improved drawing board supporting means as to admit of the board being rotated independently of the supporting table top and to produce other improvements the details of which will be more fully pointed out hereinafter. These objects I accomplish in the manner illustrated in the accompanying drawing, in which:
Figure 1 is a front elevation of a portion of a table top showing a drawing board supported therefrom by my improved means, said drawing board being shown in the horizontal position, and, Fig. 2 is a side elevation of the same showin the drawing board supported in an inclined position.
Similar numerals refer to similar parts throughout the several views.
1 represents the horizontal top member of a table of any suitable character and 2 represents separated table clamping brackets, each of which preferably comprises a vertical member 2 from which upper and lower arms 2 and 2 project at right angles. The lower clamping arm 2 has a threaded engagement with the usual clamping screw 3 whlch is adapted to be turned into clamping engagement with the underside of the marginal portion of the table 1, the upper clamping jaw 2 being in engagement with the upper side of said table. With each of the members 2 of each of the clamps, is formed a bearing projection 4 and within these bearing projections are rigidly secured the ends of a horizontal rod 5. On the rod 5 is rotatably and slidably mounted a sleeve 6, with the central enlargement of which is formed an arm 7 which terminates in a reduced pin extension 7. The sleeve 6 is adapted to be locked in the desired position upon the rod 5 by means of a suitable form of set screw 8 which passes through a threaded opening in said sleeve.
9 represents a drawing board which has ailixed to its underside on opposite sides of its center, a pair of bracket plates 10, the latter having depending therefrom, suitable brackets or keepers 10.
11 represents a coupling and bearing memher, which is in the nature of an upright tubular body 11 from opposite sides of which project at right angles therewith, socket arms 11". Secured in each of these socket arms is the inner end of a short horizontal rod section 12, the outer end of which is connected with the depending bracket 10 of the drawing board. The upright member 11 of the bearing and coupling device, receives loosely the pin extension 7 of the arm 7 heretofore described.
13 represents a set screw of suitable form, which passes through a threaded o ening in the bearing member 11 and is ac apted to frictionally engage the pin 7, thereby providing means of locking said member ll against rotation on said pin.
From the construction described, it will be understood that by loosening the set screw 8, the drawing board may through the turning of the sleeve 6 on the rod 5, be turned or moved to a desired inclination with relation to the table (see Fig. 2). It is also obvious that by loosening the set screw 12, the drawing board 9 may be rotated or its bearing member 11 whirled or rotated upon the pin 7 thus providing means for turning the drawing sheet to the position most desirable for the use of the draftsman. It is also evident that when the set screw 8 is loosened, the sleeve 6 may be moved horizontally upon the rod 5, thus carrying or moving the drawing table when desired to a new position at the right or left, in which position the board may be held by tightening said set screw 8.
Although I have heretofore described my drawing board support as carried by a table top, it will be obvious that the same may be applied to the ledge or projecting member of any article of furniture or other framework which may be embraced by the clamping members and owing to the fact that the drawing board and the supporting members connected therewith, may be readily lifted out of engagement with the pin 7 and that the clamping members may be readily disengaged from the supporting table top or other support, it is evident that a separation of the parts described may be readily attained.
From the foregoing description, it will be seen that simple and efficient means are herein provided for accomplishing the objects of the invention, but while the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes within its purview such changes as may be made within the scope of the appended claim.
WVhat I claim, is:
In a support for drawing boards, the combination with a bracket body comprising clamps, a rod extending between said clamps, a rotatable sleeve on said rod, said sleeve having a pin projecting therefrom, and a set screw for retaining said sleeve in engagement with said rod, of a drawing board, brackets depending therefrom, a tubular bearing member rotatably mounted on said pin, rods connecting said bearing member and brackets, and a set screw for limiting the rotary movement of said bearing member on said pin.
In testimony whereof I aifix my signature in presence of two Witnesses.
ADOLPH HOFFMAN. Witnesses: v i
A. L. PHELPS,
L. CARL S'roUcH'roN.
US51173309A 1909-08-07 1909-08-07 Adjustable drawing-table. Expired - Lifetime US956096A (en)

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US51173309A US956096A (en) 1909-08-07 1909-08-07 Adjustable drawing-table.

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US51173309A US956096A (en) 1909-08-07 1909-08-07 Adjustable drawing-table.

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US956096A true US956096A (en) 1910-04-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908561A (en) * 1974-02-21 1975-09-30 Gary Cowley Single pedestal drafting table
US20060162625A1 (en) * 2004-09-09 2006-07-27 Robert Mayben Portable adjustable table extension for use by the physically impaired

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908561A (en) * 1974-02-21 1975-09-30 Gary Cowley Single pedestal drafting table
US20060162625A1 (en) * 2004-09-09 2006-07-27 Robert Mayben Portable adjustable table extension for use by the physically impaired

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