Abstract:
An adjustable bracket adapted to be secured to a rigid surface and firmly held in a selected position over a wide range. Its paramount advantage is the ease with which the adjusted position may be realized and the object rigidly held therein against vibration and shock.

Description:
FIELD AND BACKGROUND OF THE INVENTION 
     In the case of hospitals, sanatoria and other institutions for the accommodation of bed-ridden patients there has been an increased use of instruments for monitoring the patient&#39;s response to treatment and the diagnosis of his condition. Certain of such instruments are in the nature of electronic assemblies, e.g., for telemetering and are subjected to considerable handling and abuse, not only by members of the staff, but frequently by the patient. The equipment, as often as not, is unfamiliar to the patient and, since some of them resemble a standard cradle-type telephone, are often moved carelessly or dropped in handling. 
     Although adjustable brackets of the class here involved are known, none known to use have been conceived with the specific object of rigidly supporting the instrument while providing ready adjustability. Accordingly, our invention has these desiderata as principal objects. 
     A further object is the attainment of these objectives by means of a minimum number of inexpensive parts readily adapted to sterilization, re-finishing and freedom from complications. 
     Another object is to achieve an arrangement for the purposes stated from which springs, counterbalances and other biasing expedients have been eliminated to insure against a helpless patient being trapped between parts of the device and with consequent injury. 
     Another object resides in a construction for the several joints which provide adjustability which are themselves sturdily constructed in order to avoid looseness in one or more thereof which, if allowed to cumulate, would lead to intolerable alteration in a once-established position. 
     SUMMARY OF THE INVENTION 
     The invention will be disclosed exemplificatively as embodied in a bracket, most conveniently denominated as universally adjustable, in a manner as will appear from the ensuing description. In order to amount the bracket on a rigid surface, it is provided with a rigid base, to which a first arm is secured through the medium of a first pivotal joint having two degrees of freedom. At the opposite end of this first arm is secured a second pivotal joint having two degrees of freedom. From this second joint extends a second arm and, at the opposite end of the second arm, is a third joint having two degrees of freedom. To this latter a platform or other support is secured, upon which a telephone or other instrument may rest. The several pivotal joints may, if desired, be provided with stops to limit movement thereof to a specific range to prevent the platform from inadvertently occupying unwanted positions. The several rotatable joints are desirably provided with friction washers to render retention of a selected platform position easier and more reliable. Nuts, dished washers or the like may be used. 
     By manipulating the several arms with respect to each other, translationally and/or rotataby the object supported on the bracket may be placed in an infinite number of positions limited only by the dimensions of the several arms. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     FIG. 1 is a side elevational view of the bracket; 
     FIG. 2 is detail view taken in the direction of the arrows 2--2 of FIG. 1; 
     FIG. 3 is a detail view taken in the direction of the arrows 3--3 of FIG. 1; 
     FIG. 4 is a detail view taken in the direction of the arrows 4--4 of FIG. 1; 
     FIG. 5 is a detail view taken in the direction of the arrows 5--5 of FIG. 1. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Adverting to the drawing there is shown an adjustable bracket embodying the invention as adapted to supporting, for example, a cradle-type telephone 10 on a shelf 12 as the same might be conveniently located at the bedside of a hospital patient. To avoid inadvertent dislodgment of the instrument, a flange 13 or equilavent means extends peripherally of the base. Any clearance holes required around parts protruding from the bottom of the telephone may be accommodated by apertures 15. 
     The first joint (FIG. 4) is indicated generally by the numeral 21 and comprises a fixed part 21a, in this case a bent bar or rod 21b passing through an aperture in a plate 18 is threaded to receive a pair of adjusting nuts 24--24 and lock washers 25--25 whereby the plate 18 may be secured in position, as will be clear. The other end of the bar 21a is threaded to receive two nuts 27--27 and associated lock washers 28--28. A sleeve 29 extends between the washers 28--28. By suitably loosening or tightening the nuts 27--27 the sleeve may be rotatably adjusted, thus allowing for a second degree of freedom. 
     A second sleeve 31 is integrated with the first sleeve 29, as by welding (FIGS. 1 and 4). Nuts 32--32 and washers 28--28 are employed to fasten the sleeve in position. Tubular struts 41--41, having their ends flattened, provide a third degree of freedom. 
     At their inner end the struts 41--41 are drilled to pass the stud 42. 
     The pivotal joint indicated generally at 40 may best be considered by reference to FIGS. 1 and 3, and affords another two degrees of freedom and, considered with their accompanying description, constitutes a fifth degree of freedom. Similarly with respect to the pivotal joint 50 which affords a sixth degree of freedom. This latter joint 50 carried the shelf 12 referred to above. The details of construction of the joints 40 and 50 are believed to be apparent from the description heretofore given. 
     For securing the bracket assembly as an entirety to a fixed surface, e.g., a wall 16, a box 18 or equivalent is provided, togehter with screws 19. A right angle piece 51 serves to join the shelf 12 to the adjacent sleeve 29a. 
     Line cords, such as 55, may conveniently be housed within the interior of the several tubular arms such as 41, and by-passed exteriorly around the several joints such as 40 and 50. The limit stops heretofore referred to may be so arranged as to prevent such movement of the joints as might damage the line cord and other wiring connected to instruments carried on the bracket. 
     One outstanding advantage of the invention bracket is its use of standard parts, such as the studs, nuts, bolts and sleeves forming a major portion of the several joints such as 40 and 50. In this way the expense of tooling for the production of special parts is avoided and costs materially reduced.