US3067705A - Parallel submerged individual industrial units - Google Patents

Description

Dec. 11, 1962 R. P. GRAHAM PARALLEL SUBME'RGED INDIVIDUAL INDUSTRIAL UNITS 3 Sheets- Sheet 1 Filed May 8, 1959 INVENTOR. Richard P. Graham BY WITNESS Dec. 11, 1962 R. P. GRAHAM 3,067,705

PARALLEL SUBMERGED INDIVIDUAL INDUSTRIAL UNITS Filed May 8, 1959 3 Sheets-Sheet 2 INVENTOR.

f Riqhard P. Graham Dec. 11, 1962 R. P. GRAHAM 3,067,705

PARALLEL SUBMEIRGED INDIVIDUAL INDUSTRIAL UNITS Filed May 8, 1959 3 Sheets-Sheet 5 5| E 50 L. J a; 55 54 ,4, I -53 79 62 Flg. 5. s3 1 6| I .l INVENTOR. "R Richard. P. Graham WITNESS I BY v Ii -M TTOP/VEY United States Patent Ofihce enemas Patented Dec. 11, 1962 3,067,765 PARALLEL SUBMERGED INDIVIDUAL INDUSTRIAL UNITS Richard P. Graham, Stratiord, Conm, assignor to The Singer Manufacturing Company, Elizabeth, N.J., a corporation of New Jersey Filed May '8, 1959, Ser. No. 811,909 Claims. (Cl. 112-258) This invention relates to power tables for sewing machines and more particularly, to a power table for supporting a cylinder bed sewing machine such that both fiat and tubular Work may be accommodated conveniently on the cylinder bed.

It is an object of this invention to provide a power table .arrangement for supporting a cylinder bed sewing machine in a submerged fashion with respect to the table top such that the cylinder bed is disposed substantially flush with the table top.

Another object of this invention is to provide a power table arrangement of the above character in which the elevation of the sewing machine cylinder bed relatively to the power table top may be selectively adjusted.

With the above and additional objects and advantages in view, as will hereinafter appear, this invention comprises the devices, combinations, and arrangements of parts hereinafter described and illustrated with accompanying drawings of a preferred embodiment in which:

FIG. 1 represents a side elevational view of a power table embodying the feature of this invention in which the table top is illustrated in cross section and a sewing machine is illustrated in dashed lines,

FIG. 2 represents a top plan view of a power table top illustrating the sewing machine supported in place relatively to the table top,

FIG. 3 is an enlarged cross-sectional view taken substantially along line 33 of FIG. 2,

FIG. 4 represents an enlarged horizontal cross-sectional view taken substantially along line 44 of FIG. 1, and

FIG. 5 represents an enlarged cross-sectional view taken substantially along line 55 of FIG. 1.

As illustrated in the drawings, the power table of this invention comp-rises a table top 11 supported by a plurality of leg members of which one is indicated in 12 in FIG. 1. The table top is formed with a rectangular aperture 13 sufficiently large as to accommodate insertion therethrough of a sewing machine indicated generally as 14. The sewing machine illustrated in FIGS. 1 and 2 is preferably of the cylinder bed Variety, such as the tacking machine illustrated in the Hale et a1. Patent No. 2,822,771, February 11, 1958. The sewing machine includes a base 15 from which rises a standard 16 supporting a cylinder bed 17 above the base 15 and a bracket arm 18 overhanging the cylinder bed. The sewing machine is fitted with a stop motion mechanism including a winging frame 19 controlled by a pull cable 20 for establishing a driving relation between the sewing machine main shaft 21 and a constantly running belt 22. A second pull cable 23 may be used for opening a work clamp (not shown) or the like on the sewing machine. A rear cover member 24 is used to enclose the stop motion mechanism and other devices at the standard end of the sewing machine.

The table top aperture 13 is rabbetted, as at 3% to accommodate the shoulders 31 of a pair of inserts 32 and 33 so as to support the inserts substantially flush with the table top. The insert 32 snugly embraces the sewing machine standard 16 and the rear cover member 24 while the insert 33 only partly fills the space between the walls of the aperture 13 and the sewing machine cylinder bed. Each of the inserts 32 and 33 is locked in place by means of a plurality of turn buttons 34 fixed beneath the inserts chine.

and cooperating each with a striking plate 35 fixed beneath the table top.

Secured beneath the table top 11 at each side of the aperture 13 are tapped fittings similar to floor flanges each of which threadedly accommodates a depending hollow sleeve member 41. Carriage bolts 42 in the table top passing through the tapped fittings 40 and concentrically through the sleeve members 41 support angle iron rails 43 and 44 in substantially parallelism one at each side of and beneath the table top aperture 13. The hollow sleeve members provide adjustable spacers for regulating the proximity of the rails to the table top with nuts 45 on the carriage bolts serving to lock the rails in place.

A bracket 46 secured by screws 47 to the rail 44 carries a pair of resilient cushioning members 48 for supporting one side of the sewing machine base. A bracket 49 secured by a screw 56 to the rail 43 is fitted with a block of resilient material 5i. upon which the opposite side of the sewing machine base rests. A drip pan 52 is secured by machine screws 53 to a pair of depending bosses 54 on the bracket 46 and a depending boss 55 on the bracket 49. The drip pan 52 thus spans the rails 43-44 beneath the sewing machine and locks the rails together as a unit to provide a steady support for the sewing maof the drip pan accommodates a conventional oil collecting jar attachment 57. The drip pan 52 is formed with a pair of bearing lugs 5858 for a rock shaft 59 controlled by means of a chain 66 connected to a treadle or the like and having a rock arm 61 to which the pull cable 20 of the stop motion mechanism is attached. Also formed beneath the drip pan 52 are bearing lugs 6262 for a rock shaft 63 controlled by a chain 64 connected to a treadle or the like and having a rock arm 65 to which the pull chain 23 of the work clamp opening mechanism is attached.

Secured in position spanning the rails 43, 44 adjacent to the sewing machine drip pan is a support plate 7d for a rear cover member 24 of the sewing machine. The rear .cover 24 encloses the work clamp opening mechanism and the stop motion mechanism as well as the sewing machine driving belt 22. The belt 22 is driven by a pulley 73 fast on the shaft of an electric motor 74. The electric motor is secured to a carrier plate 75 which is pivoted as at 76 at one side to a bracket 77 secured to the rail 43. The bracket 77 is secured in selected angular position about the pivot 76 by means of a bolt 78 depending from a bracket 79 secured to the rail 44. The tension in the driving belt 72 may thus be adjusted by means of the bolt 78.

With the arrangement of the present invention, the sewing machine 14, the sewing machine driving motor 74 together with the drip pan and the control mechanism for the sewing machine are all carried by common supporting means in the form of the parallel rails 43 and 44 beneath the table top. Any adjustments of the position of the rails 43, 44 for the purpose of locating the cylinder bed 17 at a desired elevation relatively to the table top, therefore, will not disturb the motor 74 relatively to the sewing machine nor will it affect the driving belt tension or the control connections to the sewing machine.

As illustrated in FIG. 2, the sewing machine is preferably arranged with the cylinder bed extending substantially parallel to the front edge 80 of the table top which front edge may be indented as at 81 in front of the cylinder bed for more convenient access to the stitching area by the machine operator.

With the cylinder bed 17, the insert 33, and the table top 11 being disposed substantially flush, flat work may be accommodated conveniently by the sewing machine. The space available between the cylinder bed 17 and the A drain pipe 56 threaded into the lowest point insert 33 at each side is preferably as wide as the cylinder bed 17. This .space is sufficiently large to accommodate tubular articles on the cylinder bed and yet sufiiciently small that it may be bridged readily by a flat piece of fabric being stitched by the sewing machine.

As illustrated in the drawings, therefore, the sewing machine can accommodate either flat or tubular work With equal convenience. If it should be contemplated to sew continuously on flat work with no occasion for tubular 'work, then a fiat cover or bed extension (not shown) of conventional design may be applied to the cylinder bed 17 to bridge the space between the cylinder bed 17 and the insert 33.

Having thus set forth the nature of this invention, what I claim herein is:

1. A sewing machine power table having a table top formed with a sewing machine accommodating aperture, leg means secured to said table top for supporting said table top in elevated position, a pair of rails disposed beneath and parallel to said table top at opposite sides of said aperture, a plurality of threaded bolts secured in said table top and suspending said rails in spaced relation therebeneath, an extensible spacer member associated with each of said threaded bolts and arranged between the rail and the table top to limit the proximity therebetween, a sewing machine provided with a casing formed with a work supporting surface, means spanning said pair of rails for supporting said sewing machine in said table top aperture, with the work supporting surface of said sewing machine casing disposed substantially flush with said table top, an electric sewing machine driving motor, means spanning said pair of rails for supporting said electric motor relatively to said sewing machine, and means drivingly connecting said sewing machine and said electric motor.

2. A power table for a sewing machine, said sewing machine provided with a casing including a base, a standard rising from said base, a cylinder bed projecting from said standard and a bracket arm carried by said standard overhanging said cylinder bed, said power table comprising a table top formed with an aperture larger than the vertical projection of said sewing machine casing, leg means secured to said table top for supporting said table top in elevated position, a pair of rails disposed beneath and parallel to said table top at opposite sides of said aperture, means for suspending said rails from said table top at selected distances therebeneath, and means spanning said pair of rails for supporting said sewing machine base 4 beneath said table top with said cylinder bed disposed substantially flush with said table top.

3. A sewing machine, a cylinder bed provided on said sewing machine and formed with a work supporting surface, a sewing machine power table including a plurality of leg means, a work supporting table top secured on said leg means, means on said power table for supporting said sewing machine with the cylinder bed substantially flush with the table top, said power table top formed with a sewing machine accommodating aperture, a plurality of floor flanges secured beneath said table top, one pair disposed at each side of said aperture, carriage bolts secured in said table top and extending one through each of said floor flanges, a pair of rails disposed substantially parallel to and beneath said table top, said rails being apertured each to accommodate the pair of carchine in said table top aperture.

4. A power table for a sewing machine as set forth in claim 2 in which an insert is carried in said table top aperture and disposed partly filling the space between the edges of the table top aperture and the sewing machine cylinder bed.

5. A power table for a sewing machine as set forth in claim 2 in which the front edge of said power table top is formed between the extremities thereof with an indentation toward said aperture, and in which said means spanning said pair of rails for supporting said sewing 'machine base is adapted to support said sewing machine with said cylinder bed disposed substantially parallel to said indentation in the front edge of said table top.

References Cited in the file of this patent UNITED STATES PATENTS 262,500 Sweeney Aug. 8, 1882 1,299,143 De Voe Apr. 1, 1919 2,116,433 Hallowell May 3, 1938 2,477,433 Webb July 26, 1949 2,723,637 Sauer Nov. 15, 1955 2,960,050 Lukins Nov. 15, 1960

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