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Publication numberUS1135155 A
Publication typeGrant
Publication dateApr 13, 1915
Filing dateJan 6, 1914
Priority dateJan 6, 1914
Publication numberUS 1135155 A, US 1135155A, US-A-1135155, US1135155 A, US1135155A
InventorsGeorge Blundell
Original AssigneeGeorge Blundell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1135155 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented A r. 13, 1915.




Specification of Letters Patent.

Patented Apr. 13, 1915.

Application filed January 6, 1914. Serial No. 810,566.

To all whom it may concern:

Be it known that I, GEORGE BLUNDELL, a citizen of the United States of America, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Arm-Rest, of which the following is a specification.

This invention relates to an improvement on those devices which are designed for supporting the arm or hand while making an entry or writing in a book, near the lower edge thereof. These devices are especially adapted for bookkeepers who have entries to make in books of considerable thickness, and as the edge of the desk does not usually project beyond the lower edge of the book, there is no place on which to rest the hand or arm while making the entry, and even if there is a space on the desk on which to rest the hand, the thickness of the book is such that it is impossible to make the entry an tlhe book while the hand is resting on the The main object of my invention is to provide a readily adjustable means between the lower supporting board and the upper rest board whereby the hand in which the pen or pencil is held can quickly raise or lower the upper rest board while leaving the other hand free for holding the papers or books from which the entries are being made or marking the place from which the entries are being made. As previously constructed such arm rests necessitate the employment of both hands in adjusting the upper rest board to the required height. In the present instance the board can be turned with the little finger of the hand which is holding the pen without disturbing its position in the hand. The present invention obviates this difficulty and furnishes a means for supporting the hand at the same elevation as the leaf of the book to be written upon, the said support being adjustable to regulateits height according to the variation in the thickness of the book by merely rotating the upper board or hand rest with a screw threaded stem upon which it is mounted as herein described and claimed.

Referring to the drawings: Figure 1 is a perspective view showing a portion of the desk with a book thereon and the supporting device in position, ready for use. Fig. 2 is a section on line a0 -w Fig. 1. Fig. 3 is a perspective in detail of the supporting device. Fig. 4: is a perspective of the lower board inverted. Fig. 5 is a perspective of the adjustable rest board.

The device comprises a lower supporting board 1, having a relatively thin blade 2 which is adapted to rest on the desk and underneath the book 3, as clearly shown in Figs. 1 and 2, so that the weight of the book will support the lower board. A shoulder 4 is formed at the inner edge of the lower board 1, which is adapted to bear against the edge of the desk 5 to square up the device with the desk and keep it in proper position. A metal nut 6 is arranged in the board 1, the nut 6 having a flange 7 on its lower end which is fastened by screws 8 to the board. 9 designates the upper board which constitutes a rest. This rest is secured to two brackets 10 which cross each other as clearly shown in Fig. 5, and are secured to the board. A screw threaded stem 11 is secured to the two brackets 10 and passes therethrough and its upper end bears against the upper board 9, as clearly shown in Fig. 2, and the screw threaded stem 11 is received in the nut 6. By rotating the upper board by the fingers of the hand holding the pen or pencil it may be raised and lowered to suit the thickness of the book.

Fig. 2 shows the manner of use, the upper board 9 having been adjusted to the desired elevation and the hand of the writer being shown as resting thereon. \Vhen the hand is thus supported, the pen is brought into proper position and the act of writing on the book may be performed naturally and with the greatest ease. The device thus insures legibility of the writing, in addition to saving time in making the entry, and re lieving the accountant from a laborious method of writing.

The advantage of the means of adjustment described will be readily apparent for the reason that one hand can remain substantially in writing position while the other hand need not be disturbed during the adjustment of the upper board.

What I claim is:

An arm rest comprising a lower board having a blade, adapted to rest upon a desk beneath a book and to be retained by the book, and a shoulder which is adapted to bear against the desk to hold the rest in proper relation to the book, a nut in the lower board, a screw threaded stem supported in the nut, a pair of brackets fixed to the upper end of the screw threaded stem my hand at Los Angeles, California this 18 and an upper board seated upon the upper day of December, 1913. end of the'screw threaded-stem and secured to the brackets so as'to provide a rotatable GEORGE BLUNDELL' vertically adjustable rest for the Writing In presence of G. T. HACKLEY,

hand of the user. 7

In testimony whereof, I-have hereunto set LORRAINE E. DURROW.

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

' Y Y Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4018217 *Nov 20, 1975Apr 19, 1977Evans Daniel RArm and hand rest device for microsurgery
US4378108 *Sep 23, 1980Mar 29, 1983Bailey Jr Paul FAuxiliary support table for use by ophthalmologists
US4976407 *Dec 13, 1989Dec 11, 1990Edtech CompanyAdjustable wrist support
US5219136 *Sep 4, 1991Jun 15, 1993Microcomputer Accessories, Inc.Adjustable keyboard support
US5340067 *Mar 27, 1992Aug 23, 1994Martin Teresa AHand and wrist support for computer mouse
US5657956 *Aug 14, 1995Aug 19, 1997Idea Development, Engineering And Service, Inc.Thrust bearing and use of same with apparatus for reducing repetitive stress injury
US5863132 *Jun 20, 1997Jan 26, 1999Idea Development, Engineering And Service, Inc.Thrust bearing and use of same with apparatus for reducing repetitive stress injury
US6161806 *Jan 17, 1997Dec 19, 2000Idea Development, Engineering And Service, Inc.Apparatus and method for reducing repetitive stress injury
US20110226920 *Mar 16, 2010Sep 22, 2011Zechariah Ben MosesKeyboard adjustment apparatus and associated method
U.S. Classification248/118.3
Cooperative ClassificationA47B21/0371