US2829396A

US2829396A - Sewing machine supports

Info

Publication number: US2829396A
Application number: US456368A
Authority: US
Inventors: Charles O Kishibay
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1954-09-16
Filing date: 1954-09-16
Publication date: 1958-04-08
Anticipated expiration: 1975-04-08
Also published as: DE1047594B

Description

C. O. KISHIBAY SEWING MACHINE SUPPORTS Api-il s, 1958 Filed Sept. 16. 1954' 'INVENTQR. Charles 0;](1Zslnbay ATTORNEY w m m y Y WITNESS? United States Patent TO 71cc.

SEWING MACHINE SUPPORTS Charles 0. Kishibay, Trumbull; Conn., assignor to The Singer Manufacturing Company, Elizabeth, N. 1., a corporation of New Jersey Application September 16, 1954, Serial No. 456,368

' 4 Claims. c1. 16-135) This invention relates to sewing machines, and more particularly, to noise and vibrationdampening supports for sewing machines.

It is an object of this invention to provide a means which is highly effective in dampening the transmission of noise and vibration from a sewing machine frame to the structure upon which the sewing machine frame is supported.

Another object is to provide a noise and vibration dampeninghinged connection between a sewing machine frame and a machine supporting means.

It is also an object of this invention to provide a noise and vibration dampening arrangement which is adapted for use with a sewing machine support of the type having a replaceable sewing machine accommodating insert.

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

Fig. l'is a top plan view of a sewing machine with a machine accommodating insert and a portion of the machine supporting surface, and illustrating the noise and vibration dampening means of my invention applied thereto.

Fig. 2 represents a cross-sectional view taken substantially along the line 2-2 of Fig. 1 with portions which do not pertain to the noise and vibration dampening means being omitted. 1 1 Fig. 3 represents a perspective view of the noise and vibration dampening hinge pintle member and that portion of the machine supporting insert which is formed complemental to said hinge pintle member.

Fig. 4 is an enlarged top plan view of the hinge pintle member and portions of the sewing machine and sewing machine supporting insert illustrating a modified form of hinge pintle cavity in the insert.

Referring more particularly to Figs. 1 and 2 of the drawings, this invention is illustrated as applied to a sewing machine of the conventional type having a frame including a gooseneck which extends upwardly from a flat work-supporting bed 11. The bed is formed with depending reinforcing flanges illustrated at 12 which are adapted to be received in an aperture 13 of a machine supporting insert 14. The insert, in turn, is received in a cut-out 15 which is formed in any conventional table top 16. This type of insert for a sewing machine supporting table is advantageous since one table can be used to support any one of a number of different sewing machines simply by substituting with each different sewing machine a different insert with an aperture 13 which is shaped appropriately for the sewing machine to be accommodated. The insert 14 may also be formed with a slot 17 through which a driving belt 18 may pass to reach a pulley 19 formed on the sewing machine hand wheel 20.

Patented Apr. 8, 19 58 As illustrated in Figs. -1 and 2, the present invention comprehends the provision of a multiplicity of barriers to the transmission of noise and vibration from the machine frame bed 11 to the machine supporting table top 16. To this end, the insert 14 is flexibly supported in the cut out 15 of the table top 16 upon four resilient members 21-21 one at each corner of the bed. Extending across beneath the cut-out 15 and disposed one at each extremity thereof are a pair of bracket members 22 each being securedin position beneath the insert 14 by lag screws 23-23. The resilient members 21, which are preferably made of rubber or similar flexible elastic material, are formed each with an axial bore 24 adapted to fit upon a locating pin 25 which is set into the bracket member 22 and thus serves to hold the resilient ,member 21 in place. Shallow counterbores 2626 are formed in the under side of-the insert 14 to receive the four resilient members 21-21 so as to locate the insert accurately and positively with respect to the work-supporting table top 16.

The sewing machine frameis flexibly supported with respect to the insert 14 by means of two resilient pads 3tl-30'which areiinserted between the work support 11 and the insert 14 at the front corners thereof, and by means of the resilient hinge pintle members indicated generally as 31-31 which are arranged to extend from along the back side of the bed flange 12 and into two pintle receiving cavities 32-32 formed in the insert 14.

As illustrated in Fig. 3, each hinge pintle member 31 is preferably made in the form of a pad of resilient ma terial such as rubber or neoprene which is molded about a first limb 33 of an angle bracket. A second limb 34 of the angle bracket extends out of the resilient material and is formed with clearance holes 35-35 for fastening screws 36-36 by which the pintle members are secured to the depending flange 12 of the machine frame. The resilient pad of the pintle member is provided with a body portion 37 of substantially rectangular cross-sectional configuration and with an enlarged free extremity 38' defining a hinge pintle, which as shown in Fig. 2, is generally circular in cross section. The cylindrical pintle 38 is preferably offset with respect 'to the body portion 37 so as to be even or flush with the top side of the body portion and to extend beyond the under side thereof so as to provide a'depending lip 39 beneath the level of the body portion 37. The pintle 38 is also extended axially at each side to a point laterally of the body portion 37 to provide a hemispherical protuberance 40-40 at each side of the hinge pintle.

The preferable shape of each pintle receiving cavity or recess 32 is illustrated in Figs. 2 and 3; The cavity comprises an upwardly open slot 41 formed in the insert 14, the slot 41 having rounded extremities 42-42, as shown in Fig. 3, and a rounded bottom 43 as shown in Fig. 2. The slot 41 is joined by an upwardly open shallow notch 44 which extends laterally from the slot 41 to the machine accommodating aperture 13 in the insert. As illustrated in Figs. 1 and 2, the shallow notch 44 of the recess 32 accommodates the body portion 37 of the hinge pintle while the slot 41 of the recess is formed to receive the enlarged cylindrical extremity 38 which provides the hinge pintle. The rounded bottom 43 and the rounded ends 42-42 of the slot are preferably dimensioned so as to conform closely with the size and shape of the depending lip 39 and the protuberances 40-40, respectively, of the hinge pintle.

With the supporting structure described above, the sewing machine may be lifted or replaced vertically and thus separated or repositioned quickly and conveniently from the supporting table insert 14 whenever replacement or repair of the machine is necessary. The machine may also be tilted back to expose the under side of the work-supporting bed 11. Such tilting occurs about a pivotal axis defined by turning of the pintles 38 -38 in the similarly contoured bottoms of the cavities 3232 of the insert. In any position of the pintles 31 in the cavities 32, the "hemispherical protuberances--40+- 40 and the depending lip 39 lock the pintles against displacement in any but ayertically upward direction so that thesewing machine will always be properly centered in the insert aperture 13.

In mostinstances, the weight of the sewing machine will be sufiicient to prevent accidental displacement of the hinge pintle members 31--31 out of the cavities 32-32. A modification illustrated in Fig.4, however,

larged portion formed at the free extremity of said body portion defining a pintle, said pintle presenting a cylindrical surface disposed flush with one side of said body portion and proud of the opposite side thereof, and at least one substantially hemispherical protuberance arranged to project axially of said pintle and beyond said body portion.

3. A hinge for supporting a sewing machine upon a table top, comprising a pintle member including a rigid element, means formed on .said rigid element to facilitate the fastening of said pintle to said sewing machine, a

' pad of. resilient material, having a body portion secured indicatesa means for positively locking the hinge pintle cover plates 5050 must .be turned back to expose the rounded ends of the cavities 32 as is illustrated in the full line positionof the right hand cover plate in Fig. 4. After the pintle has been lowered vertically into the cavity, turning of both cover plates to the position illustratedby the left-hand cover plate of Fig. 4 will lock the pintle in place in the cavity and prevent accidental displacement of the/sewing machine with respect to the supporting table.

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

1. A hinge device adapted pivotally to sustain a sewing machine upon a table top, comprising a rigid body member provided with means adapted to secure said hinge to the sewing machine, and a pad of resilient ma-- terial secured to said rigid body member, said pad having a portionformed with'a cylindrical contour defining a pintle, and at. least oneprotuberance extending laterally' of said pad and located axiallyof'said pintle.

2. A hinge device adaptedpivotally to sustain a sewing machine upon a table top, said hinge device comprising a rigid angle bracket including a first limb formed with means to facilitate the fastening of said hinge pintle to said rigid element, a portion of said pad having a cylindrical surface disposed at the free extremity of said body portion, and substantially hemispherical protuberances formed one at each end of said cylindrically surfaced portion to project beyond said body portion, and an upwardly open pintle accommodating recess formed in said table top, said recess being formed with a bottom surface of substantially cylindrical contourand with rounded extremities, the bottom surface and the extremities of said recess being complemental to the cylindrically surfaced free extremity portion and, the hemispherical protuberances of said pintle member.

to said sewing machine and a second limb, a pad of resilient material comprising a body portion of substantially rectangular cross-sectionalconfiguration disposed to envelop the second limb of said angle bracket, an en- 4. A hinge for supporting asewing machine upon a table top, comprising a resilient pintle member, means for securing said pintle member to said sewingmachine, and a laterally extending protuberance formed on said pintle member, said table top being formed with an upwardly open pintle accommodating recess, said recess including a lateral extension adapted to accommodate said pintle protuberance, a cover plate, and means shiftably supporting said cover plate on said table top for movement into a position overlying said recess extension.

References Cited in the file of this patent UNITED STATES PATENTS