US2689100A

US2689100A - Motor mounting bracket

Info

Publication number: US2689100A
Application number: US119136A
Authority: US
Inventors: Max T Voigt
Original assignee: American Safety Table Co Inc
Current assignee: American Safety Table Co Inc
Priority date: 1949-10-01
Filing date: 1949-10-01
Publication date: 1954-09-14
Anticipated expiration: 1971-09-14

Description

Sept. 14, 1954 Filed Oct. 1, 1949 M. T. VOIGT 2589.100

MOTOR MOUNTING BRACKET 2 Sheets-Sheet l FIG. 2

INVENTOR.

MAX T. \10 GT Sept. 14, 1954 M, vo e-r 2,689,100

MOTOR MOUNTING BRACKET Filed Oct. 1, 1949 2 SheetsSheet 2 JNVENTOR. MAX '1'". VOIGT B++orne9 Patented Sept. 14, 1954 UNITED @TA'EES Z 68Q,l00

ATENT OFFICE MOTOR MOUNTING BRACKET Application October 1, 1949, Serial No. 119,136

1 Claim. 1

The present invention relates generally to means for mounting electric motors and more particularly to means for mounting an electric motor adjacent the underside of a work table top, the mounting being such that the motor position may be quickly and easily shifted to any desired location lengthwise of the table.

Among the principal objects of the present invention is to provide a motor mounting means adjacent the underside of a work table top characterized by the provision of a special rail disposed adjacent to and extending lengthwise of the underside of the table top in association with a quick-releasable motor supporting bracket adapted to be clamped to the rail at any desired point along its length,

Other objects of the present invention will appear more fully hereinafter, it being understood that the invention consists substantially in the combination, construction, location and relative arrangement of parts, all as described more fully hereinafter as shown in the accompanying drawings and as finally pointed out in the appended claim.

In the accompanying drawings:

Figure l is a rear elevational view of a work table provided with the motor mounting means of the present invention;

Figure 2 is a front elevational view of the work table shown in Figure 1 without the top;

Figure 3 is a cross-sectional view of the motorsupporting rail, the mounting bracket in position thereon, and a portion of the motor, as taken on line 3--3 of Figure 2;

Figure 4 is a perspective view of the assembly shown in Figure 3;

Figure 5 is a perspective view showing the opposite side of the assembly shown in Figure 4;

Figure 6 is a sectional view taken on line t-'5 of Figure 3 showing the motor and its mounting lugs disengaged from the motor-supporting bracket; and

Figure '7 is a sectional view taken on line 'Fl of Figure 3 showing the motor-supporting bracket in supporting'engagement with the mounting lugs of the motor.

The motor mounting means of the present invention is intended to be used on a sewing machine work top table of the type indicated general- 1y at Hi in Figures 1 and 2, the construction of which need not be described in detail so far as this invention is concerned, except to point out that the table is conventionally provided with a rectangular shaped table top I I supported by suitably braced vertically extending front legs l2l2 and rear legs l3-l3.

Extending horizontally between the upper end portions of the rear legs 13-43 is a rail l4 upon which a motor supporting bracket I5 is adapted to be disposed to support a motor 16 adjacent the undersurface of top H. Ihe rail M, which may be of any desirable non-circular shape in crosssection, preferably of hollow rectangular form as shown in Figure 3, is provided with flattened extremities |'l--l'l suitably apertured for projection therethrough of bolts l'i'--ll by means of which the flattened ends of the rail are fixedly secured to the legs I3--I3, as shown in Figure 1.

The motor-supporting bracket i5 of the present invention is adapted to be securely clamped to the rail at any position along its length. As

shown in Figures 3, 4 and 5, the bracket l5 essentially comprises a pair of complementally formed members I8 and I9 which are adapted to be secured together with the rail I l embraced therebetween. It will be observed that the juxtaposed inner faces of the bracket members it and I9 are complementally shaped to conjointly provide therebetween an opening of a cross-sectional shape corresponding to that of the rail 14, so that said members, when clamped to the rail, are firmly secured to the rail against any possible rotation relatively thereto.

In order to mount the bracket members it and I9 securely to the rail I l, bolts 26-20 are provided which extend the member l8 for threaded engagement in suitably tapped holes 20 in the member l9, these bolts being arranged in laterally spaced pairs thereof respectively disposed above and below the rail [4. It will be apparent that it becomes a simple matter to adjust the bracket [5 lengthwise of rail [4, this being readily accomplished by loosening the bolts 28-40 sumciently to permit the bracket [5 to be moved along the rail to the desired position and then re-tightening bolts 20-20 to clamp the bracket fast to rail M.

The bracket member I9 is provided with means to support the motor [6, the casing of the latter being provided with circumferentially spaced pairs of lugs 2l2l and 22-42 projecting from its outer circular surface. The lugs 21-2! are each provided with co-linear pins 23-23 presenting in the same direction along a line parallel to the motor axis, while the lugs ZZZ-22 are respectively provided with coaxial apertures arranged along a line also extending parallel to the motor axis. The bracket member IQ is provided adjacent its lower pair of tapped holes with a pair of laterally spaced lugs 24-25 in which suitable sockets 25-25 are formed for respective reception of the correspondingly spaced pins 23--23 on the motor casing and in which said pins may turn as said motor [6 is angularly adjusted about them. The member [9 is also provided above the lugs 20-24 with a supporting arm 26 terminating in laterally spaced lugs 27-27 the latter being adapted to overlie the motor l6 as best shown in Figures 3 and 4.

It will be noted that the lugs 27-27 are laterally spaced for respective alinement with the motor lugs 22-22, and that between the pair of lugs 27-21 and the pair of lugs 22-22 is provided a longitudinally adjustable link formed of a pair of

nested channel members

28 and 29, the member 28 being adjustable lengthwise of the member 29 by means of a bolt 30 extending through a slot 3| in member 29 and threaded into a suitably tapped opening in the member 28. The member 28 is pivotally secured to the outer extremity of the arm 26 by means of a pin 32 extending through alined openings suitably formed in the lugs 27-27 and in the side walls of said member 28. In a similar manner, the member 29 is pivotally secured to the casing of the motor I6 by means of a pin 33 extending through the alined openings formed in the motor casing lugs 22-22 and in the side walls of said member 29.

It will be apparent that when it is desired to mount the motor upon the rail 14 at any predetermined point in the length thereof, the bracket members l8-l9 are clamped to the rail at the desired point. The motor lug pins 23-23 are then projected axially into the sockets 25-25 formed in the bracket lugs 24-24, following which the motor is connected to the overlying arm 26 of the bracket by the longitudinally adjustable linkage 27-28. By proper adjustment of this linkage, the motor may be angularly adjusted about the pivot pins 2 [-21 to provide the desired tension upon the belt extending from the motor pulley (not shown) to the work utility mounted upon the top of the table [0. Should it become necessary to relocate the motor lengthwise along the table, all that is required is to loosen the bracket I upon the rail [4 and so permit the bracket and motor assembly to be shifted into any desired position along the rail.

What is claimed as new and useful is:

The combination of a motor and mounting bracket therefor, said bracket comprising a pair of members adapted to be clamped to a supporting structure, one of said members having a pair of coaxial socketed lugs formed thereon and a supporting arm extending outwardly from the face of said member, said motor having a pair of ears extending from its casing supporting a pair of coaxial pintles integral therewith and oriented to extend along said casing and spaced therefrom, said pintles being slidably and pivotally received in said socketed lugs, a linking arm, means pivotally securing said linking arm to said supporting arm for pivotal movement on an axis parallel with said sockets, means pivotally securing another portion of said linking arm to said motor casing at a point circumferentially removed from said pintles with the pivot axis parallel to said sockets, said last-mentioned means having means locking the motor when secured to said linking arm against movement along a line parallel with said pivot axes, and said linking arm having means for varying the efiective length thereof.

References Cited in the file Of this patent UNITED STATES PATENTS Number Name Date 828,083 Beswick Aug. 7, 1906 1,341,902 Hildreth June 1, 1920 1,681,896 Eames et al Aug. 21, 1928 1,988,102 Woodward Jan. 15, 1935 2,192,170 Adams Mar. 5, 1940 2,348,043 \Vebb et a1. May 2, 1944 2,419,064 Fite et a1. Apr. 15, 1947 2,496,230 Peterson Jan. 31, 1950 2,514,461 Voigt July 11, 1950 FOREIGN PATENTS Number Country Date 24,063 France Nov. 21, 1921 ('First addition to 475,581) 59,922 Denmark June 29, 1942 247,404 Switzerland Mar. 15, 1947