US 330409 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
No. 330,409. Patented NOV. 17, 1885.
UNITED STATES ATENT OrrrcEQ LARS LARSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF AND JOHN C. S. MILLER, OF SAME PLACE.
SPECIFICATION forming part of Letters Patent No. 330,409, dated November 17, 1885.
Application filed July 16, 1885. Serial No. 171,725.
To all whoml it may concern:
Be it known that I, LABS LARsoN, a subject of the King of Sweden, residing in Chicago, in the county of Cook and State of Illinois,
have invented a new and useful Improvement in Desks, of which the following is a specification.
This invention relates to that class of `desks embodying a movable pigeon-hole or bookio rack cabinet or section capable of being drawn out and turned to give access to the pigeonholes or rack.
The invention is designed to improve the manner in which this compound movement is r 5 accomplished, and its nature is fully set forth in the description hereunder written, and is illustrated iu the accompanying drawings, whereinw Figure 1 is a front elevation of part of a 2o desk in which my invention has been embodied. Fig. 2 is a plan view of that portion of the desk embodying my improvement. Fig. 3 is a vertical section upon the line33 of Fig. 2, supposing the cabinet to be closed. Fig. 4
is a plan of the bottom of the desk under the movable cabinet. Fig. 5 is a bottom view of that portion of the top above said cabinet.
In said drawings, A represents the parts of any ordinary desk adjacent to the movable 3o cabinet portion B thereof. The latter is divided, to suit the convenience of the user, into pigeon-holes, book-racks,&c.,and when closed may present the appearance shown by the full lines in Fig. 1. To allow it to be moved,it is mounted upon two supporting and guiding casters, b b', secured near its rear, and these casters move in grooves c c c2 formed in the iioor C. These grooves approximate the letter .h in outline, the part c running` in a straight 4o linefrom front to rear,the part c being parallel to but only about half the length of c, and the part cZ running at right angles to c and c' and connecting them. The cabinet is additionally guided and kept in a horizontal position, so
it will not bind against the adjacent stationary parts of the desk,by an inverted caster, b2, secured to its top and moving through a straight groove, d, in the bottom surface of that por-y tion D `of the desk forming the cover of aper- 5o ture in which the cabinet is located. This latter groove is located over and corresponds to the groove c.
The mode of operation is this.: When the movable cabinet is to be opened, it is first drawn outward and forward in a straight line until the caster b reaches the limit of groove c, such limit forming a stop to that movement. The outer end is then swung around to the position shown in full lines in Fig. 2, and by dotted lines, Fig. 1, thereby exposing the open 6o side of the cabinet and giving access to its contents. In the latter or swinging movement the caster b continues to travel toward the front in groove c, while caster b moves at right angles through groove c2. The upper caster moves only in a straight line, as does caster b. In closing,these movements are simply reversed. The casters should be either swivel or ball casters, so that the turning of the cabinet andthe changes of direction in the 7o case of caster b may be permitted. I do not, however,deem it important to employ casters, except to relieve the friction, as dowels have been and may be employed for this purposein their stead. The casters are, however, much '75 to be preferred,in my judgment. The grooves may be lined with metal in the customary way, and must of course conform in shape, width, and depth to the casters or dowels used with them. I
I hereby disclaim the construction shown in patents to Higgins, December 19, 1876, No. 185,531, and to Larson, of May 22, 1883, No. 278,152.
I claim- 1. In a desk, the combination of the movable cabinet-section having two supportingcasters, and the Hoor C, having the straight parallel grooves c c and connecting-groove c?, receiving said casters, substantially as speci- 9o fled.
2. In adesk, the combination,with a movable cabinet having two supporting-casters and one upper caster, of the iioorhaving straight parallel grooves c c and connecting-groove 0*,for 95 the supporting-casters, and the top D, having a groove, d, for said upper caster, substantially as specified.
JOHN C. S. MILLER, H. M. MUNDAY.