US1057809A - Sewing-machine stand. - Google Patents

Description

P. DIEHL & M. HEMLEB.

SEWING MACHINE STAND.

APPLICATION FILED JUNE 16, 1906.

1,057,809, Patented Apr. 1, 1913.

3 SHEETSSHEET 1.

3i /4z my. E n

IH 1 I Mm- A PLANOORAPH c0, WASHINGTON. D c.

P. DIEHL & M. HEMLEB.

I SEWING MACHINE STAND. APPLIOATION FILED JUNE 16, 1906.

1,057,809,- Patented Apr. 1-, 1913.

3 SHEETS-SHEET 2.

WITNESSES:

INVENTOR ATTORNEY P. DIEHL & M. HEMLEB. SEWING MACHINE STAND. APPLICATION FILED JUNE 16, 1906.

Patented Apr. 1, 1913.

3 SHEETSSHEET 3.

WITNESSES:

ATTORNEY COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

PHILIP DIEHL AND MAR-TIN HEMLEB, OF ELIZABETH, NEW JERSEY, ASSIGNORS TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE STAND.

To all whom it may concern:

Be it known that we, PHILIP DIEHL and MARTIN HEMLEB, citizens of the United States, residing-at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machine Stands, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to provide a simple and effective device whereby the opening and closing of the hinged leaf or coverof a sewing machine stand will efiect the raising and lowering of the sewing machine head respectively into and out of operative position. In the application of devices of this class heretofore in use to ordinary sewing machine tables it has been found necessary to disturb in some degree the proper relation of the several parts, in some cases shifting the location of the sewing machinebed-plate to accommodate the raising and lowering mechanism therefor and in other cases to reduce the size of or entirely omit the central attachment drawer. By the present improvement we are enabled to retain the most favorable construction and arrangement of the sewing machine and its supporting table while providing simple and effective mechanism connected with the folding leaf for moving the sewing machine head into and out of operative position.

In accordance with the present improve ment, the sewing machine stand is constructed. with a rock-shaft having at one end a grooved pulley to which is attached one end of a chain or cord passing upward over a guide-roller in the table-top and having its opposite end attached to the hinged leaf or cover adjacent its hinge point, the other end of such rock-shaft being provided with a fixed arm of which the free end is connected by means of a link with a pivoted supporting plate having a lateral lug upon which rests one end of the sewing machine bed-plate which is also hinged along one side to the corresponding edge of the usual opening in the top of the table. A hinged leaf is disposed in front of the sewing machine bed-plate opening in the table-top which is so connected with and operated by the said supporting plate as .to swing upwardly in the raising and lowering Specification of Letters Patent.

Application filed June 16, 1906.

Patented Apr. 1, 1913.

Serial No. 321,933.

of the sewing machine head so as to clear the projecting parts of the same as they pass above or beneath the level of the table. In

order to provide a rigidbearing for the end of the sewing machine bed-plate opposite the supporting plate, an auxiliary springretracted supporting bar is provided which is thrown underneath the adjacent end of the bed-plate by the final opening out of the hinged leaf preparatory to the operation of the machine.

The invention will be understood by reference to the accompanying drawings, in which Figure 1 is a sectional elevation representing the upper portion of a sewing machine stand provided with a sewing machine head, and embodying the present improvements, and Fig. 1 is a detail sectional elevation, upon a somewhat enlarged scale, representing the clutch-pulley and the adjacent end portion of the rock-shaft carrying the same.

Fig. 2 is a plan of the table-top with the sewing machine head removed, and showing the portion of the hinged cover-leaf adjacent its hinges. Fig. 3 is a transverse sectional elevation of the table in the plane of the rock-lever controlling the auxiliary flap or extension at the front of the bed-plate i aperture of the table, the parts being represented in the relation assumed when the bedplate-supporting member is in operative or raised position. transverse sectional views with the operative parts represented in the relation which they assume in intermediate and lowered or inoperative positions of the bedplatesupporting member. Fig. 6 is a plan view of the under side of the table, showing the arrange-- ment of the several component members of the bed-plate lifting and supporting device. Fig. 7 is a transverse sectional elevation of the table through the end of the bed-plate aperture adjacent the clutch-pulley, and representing'in side elevation the supplemental bed-plate-supporting device, and Fig. 8 is a partial longitudinal section showing the latter in edge view.

The sewing machine stand is provided with the usual platform 1 supported by the standards 2 and top board or table 3 with rectangular opening 4 fitted to the bed-plate 5 of the sewing machine head having the Figs. 4 and 5 are similar usual bracket-arm 6 and the transversely the under side of the table-top and provided with depending bearings 15 in which are ournaled the opposite ends of the rockshaft 16.

It will be observed that the wood-work and the devices employed in mounting and supporting the sewing machine bed-plate are those of the United States patent to P. Diehl and T. Kraemer No. 5 11, 174, dated June 25, 1895, excepting in the omission of the supporting lip along the inner edge of the hinged leaf or flap, and the provision of a supplemental bed-plate-supporting device at the end of the bed-plate aperture for sustaining the end portion of the bed-plate opposite that engaged by the lateral lug 11 of the hinged supporting plate 7 In other constructions heretofore devised, in which the sewing machine support has been operatively connected with the cover leaf, the auxiliary flap or extension at the front of the table for closing a portion of the bed-plate aperture has been so hinged to the table or to a platform supporting the sewing machine bed-plate as to drop with the latter within the recess for the machine in lowered position. According to the present improvement, this auxiliary flap or extension 8, which lies normally flush with the table-top, is caused to rise temporarily above the latter, as indicated in the United States Patent No. 541,474, above referred to, so as to clear the sewing machine head in both its rising and falling movements, respectively, to and from operative position. By this means, suflicient space is provided at the front of the sewing machine cavity intermediate the balance wheel and the head of the bracket arm to accommodate the usual attachment drawer customarily provided in the drop-cabinets of family machines of the wellknown Singer type. This rock-shaft is provided at one end with a fixed lateral crank-arm 17 pivotally connected with one end of a link 18 whose opposite, end is pivotally secured to depending lugs 19 upon the bottom of the supporting plate 7 by means of a pin 20, whereby the oscillation of the rock-shaft effects the rising and falling of the lifting member 7 in a manner wellknown.

The opposite end of the rock-shaft 16 is provided with a collar 21 fixed thereto by means of set-screws 22 and provided upon the inner end with a segmental tooth 23 adapted to engage a corresponding tooth 24 upon the adjacent end of the hub of the pulley 25 loosely mounted upon the rock-shaft 16, the respective teeth upon the pulley and fixed collar being retained normally in yielding engagement by means of a coiled spring 26 surrounding the hub of the pulley and. having one end secured to the latter and the opposite end attached to a lateral lug 27 upon the collar 21. The face of the pulley 25 is provided with an annular groove in which is fastened by means of a transverse pin 28 one end of a chain 29 extending upwardly over the smooth guide-pulley 3O journaled in the table-top and fastened by means of a transverse pin 81 in a slot or recess in a hinge 32 operating in connection with the hinge 33 to secure the cover-leaf 34: to the top board 3 of the table.

The supporting plate 7 is provided with an outwardly and laterally projecting crankarm 35 having a pin 36 adapted to enter a substantially segmental cam-groove 37 in the rearward end portion of a rock-lever 38 mounted upon a fixed fulcrum pin 39 and having its forward end pivotally connected with one end of a link 40 whose opposite end is pivotally connected with a depending ear 11 upon the bottom of the hinged leaf or flap 8, whereby the rocking of the lever 38 under the action of the pin 36 causes the risingand falling of the flap 8 for each rising or falling movement of the supporting plate 7. The rock-lever 38, with its connections at the opposite ends to the machinesupporting top-portion or supporting plate 7 and the supplemental top-portion or flap 8, respectively, thus affords a permanent and positive connection between the members 7 and 8, whereby the former positively controls the latter throughout its rising and falling movements, which insures the proper timing of the rising and falling movements of the flap 8 to avoid interference with the sewing machine head 6 as it passes into and out of the cavity covered by the hinged leaves.

As will be observed from the drawings, when in operative position, the flap 8 adjacent its hinges 9 and at the end nearest the supporting plate 7, is seated firmly upon the fixed platform 1, being thus supported in horizontal operative position entirely independently of the supporting plate 7 and the intermediate connections. In the use of the machine, therefore, the hinged flap 8, constituting the oortion nearest the operator, and thus like y to receive any down ward thrust imposed by the operators hands in the manipulation of the work, is sustained just as securely as the fixed platform 1 upon which it rests, while the supporting parts 7 and 47 are required only to sustain the weight of the machine head, being relieved of the support of the flap or supplemental top-portion which has heretofore been required of it.

At the end of the bed-plate opening opposite the supporting plate 7 a fixed stirrup or socket-plate 42 is secured to the under side of the table and provided with a forked socket or bearing adapted to receive lateral pins 43 at the lower end of the upright portion of an angle-piece 44 having a lower laterally extending member engaged by one end of a spring 45 whose opposite end bears upon the stirrup plate 42. The upper end of the upright portion of the angle-piece 44 is provided with a pin 46 entering an aperture in a horizontally sliding-bar 47 fitted to a suitable slide-wayin the table-top andprovided at its outer extremity with a buffer 48 of yielding material adapted to receive the sewing machine bed-plate when in operative position. The cover-leaf 34 carries at the edge provided with the hinges 32 and 33 a projecting pin 49 adapted vto enter the slide-way for the bar 47 when the leaf is extended outwardly as represented in Figs. 1 and 6, thereby forcing the slidebar outwardly into contact with the under side of the bed-plate 5 in opposition to the stress of the spring 45 upon the lateral member of the angle-piece 44.

When the cover-leaf is closed upon the table-top 3, the machine head is permitted to gravitate upon its hinges 10 to inoperative position beneath the platform where it is in practice inclosed within a suitable housing. As a space is provided between the teeth 23 and 24 upon the collar 22 and hub of the pulley 25, respectively, the depression of the supporting plate 7 to initial inoperative position before the cover has reached its closing position enables the pulley to continue its movement upon the shaft 16 under the action of the spring 26, whereby the chain is maintained taut and thus insured against liability to displacement from the grooved pulley. The provision of this slack-providing expedient serves further to permit the operator to readily lift the cover a short distance in order to secure a good hold upon the same before it is subjected to the strain necessary in lifting the weight of the machine.

\Vhen the cover leaf is raised, the pull upon the chain 29 operates to rotate the pulley 25 for the operative engagement of the teeth 23 and 24, and hence to turn the shaft 16,whereby the crank-arm 17 is caused to exert an end thrust upon the link 18 in conjunction with which it acts as a toggle to elevate and forcibly maintain the supporting plate 7 in raised operative position, and also through the engagement of the lug 11 with the bed-plate 5 to lift and sustain the sewing machine in working position. In

this operation, the movement of the pin 36 l in the cam-groove 37 of the rock-lever 38 causes the latter to be tilted out of and then into initial position, as represented respectively in dotted and, full lines in Fig. 4, thereby effecting the raising of the hinged leaf or flap 8 sufliciently to permit the higher portions of the sewing machine to pass without interference therewith and then to return to initial position. The slide-bar 47 remains in inoperative position until the cover-leaf 34 reaches the last stage of its opening movement, when its pin 49 enters the slide-way of the supporting bar and forces the latter forwardly beneath the end of the sewing machine bed-plate 5 where it is rigidly sustained to support the latter by means of the angle-piece 44. The coverleaf thus serves as an operative connection between the actuating devices for the supporting plate 7 and the auxiliary supporting member afforded by the slide-bar 47.

It will be observed by reference to'Fig. 6 that when the bar 47 is in operative position the upright member of the angle-piece 44 is substantially vertical and that the recess formed in the table-top therefor enables it to be inclined slightly backwardly when retracted. It will thus be seen that this anglepiece operates to force the forward or operative end of the bar 47 slightly upward into contact with the bed-plate 5 in the operative movement of the same, and to relieve such bar from the weight of the bed-plate in the initial retracting movement, the withdrawal of the bar 47 being the first operation effected in the closing of the stand and being readily done by the action of the spring 45, in the arrangement of the parts as above indicated.

Although the lifting member afforded by the hinged plate 7 and the supporting bar 47 are represented herein as directly engaging the sewing machine bed-plate at opposite ends, it is evident that the present improvement is equally applicable to a-sewing machine table having a hinged platform provided with the bed-plate aperture along one side of which the bed-plate is hinged, in which case the lifting device and the sustaining bar would obviously be so arranged as to engage such platform.

Having thus set forth the nature of the between said members for forcing their shoulders apart, a chain or cord connectingone of said members with the cover-leaf and acting in opposition to said spring, and a connection between the other of said mem bers and the bed-plate supporting member, said spring being of insufficient strength to support the weight of the bed-plate and its attached parts, whereby after a preliminary movement of the cover-leaf the stop-shoulders are brought into contact and the connection between said cover-leaf and the supporting member becomes unyielding.

2. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, a supporting member for said bed-plate hinged to the table and normally disposed within said opening, a rock-shaft arranged beneath the table, a crank-arm upon said rock-shaft, a1

link connection intermediate said crank-arm and the supporting member, a pulley loosely mounted upon said rock-shaft, a guideroller mounted in said table above said pulley, a cover-leaf hinged to said table, a connectingchain or cord having its ends attached respectively to said cover-leaf and pulley with its intermediate portion led over said guide-roller, a stop member carried by said rock-shaft and adapted to engage said pulley, and means for yieldingly holding,

nal rock-shaft arranged beneath the table, a

crank arm fixed upon one end of said rockshaft, a link connection intermediate said crank-arm and the supporting member, a collar fixed upon the opposite end of said rock-shaft and provided with a tooth, a loose pulley mounted upon said rock-shaft adjacent the fixed collar and provided with a tooth adapted to engage that of said 001- lar, a spring connected with said pulley and acting normally to turn the same upon the supporting shaft to withdraw its tooth from engagement with that of said collar, a guide-roller mounted in said table, a coverleaf hinged to said table, and a connecting chain or cord having one end connected to and leading from said pulley in a direction opposite to that of the action of said spring thereon and attached at its opposite end to said cover-leaf with its intermediate portion led over said guide-roller.

4. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, a movable extension-piece applied to said table and normally maintained in operative position to partially close said opening, a movable supporting member for said bed-plate normally disposed within said opening and adapted to be raised into and lowered out of operative position, elements carried respectively by said supporting member and extensionpiece, and positive and permanent connections intermediate said elements whereby said extension-piece is caused to move both to and from operative position as the bedplate supporting member moves either to or from operative position;

5. In a machine cabinet, a top having an opening therein, a machine supporting top portion movably mounted thereon to be raised from a position below said top to a position within said opening, a supplemental top portion movably mounted on said cabinet and normally disposed in operative position, an element carried by said supporting portion and an operative con nection intermediate the same and said supplemental portion for moving the latter both out of and into operative position as the supporting portion rises.

6. In a machine cabinet, a top having an opening therein, a machine-supporting topportion movably mounted thereon to be raised from a position below said top to a position within said opening, a supplemental top-portion pivotally mounted on said cabinet and normally seated upon a stationary member of the cabinet and substantially flush with the machine-supporting top-portion, an arm pivoted to said cabinet and connected to said supplemental portion, and an element on the supporting portion positioned to engage said arm to move said supplemental portion out of and into operative position as the supporting portion rises.

7 In a machine cabinet, a top having an opening therein, a machine-supporting topportion hinged therein at one side thereof and adapted, together with the machine base-plate to partly close said opening, means for raising and lowering said supporting portion and base-plate, an extensionpiece hinged to said top at the opposite side of said opening and adapted to rest normally in and complete the closure of said opening, an arm pivoted to said cabinet, a link connecting one end of said arm with said extension-piece, and an element on the supporting portion positioned to engage said arm to move said extension-piece both out of and into closing position as the supporting portion and base-plate rise to a like position.

8. A sewing machine stand comprising a table formed with a longitudinal openmg to receive the sewing machine bed-plate, an extension or flap forming a movable part of said table with one edge disposed along one side of said opening and the opposite edge hinged to a fixed part of the stand and adapted to swing upwardly above the level of the table-top, a supporting member for said bed-plate hinged to the table and disposed within said opening, actuating means whereby said supporting member is raised into and lowered out of operative position within said opening, and means including a rocklever and connections at the opposite ends thereof respectively with said supporting member and the extension or flap whereby the latter is raised from normal flush relation with the table-top when the supporting member either rises or descends for the purpose described.

9. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, an extension or flap forming a movable part of said table with one edge disposed along one side of said opening and the opposite edge hinged to a fixed part of the stand, a supporting member for said bed-plate hinged to the table and disposed within said opening, actuating means whereby said supporting member is raised into and lowered out of operative position within said opening,-and

porting member and the extension or flap whereby the latter is both raised and lowered during each movement of the supporting member in one direction between operative and inoperative positions.

10. A sewing machine stand comprising a tableformed with an opening to receive a sewing machine bed-plate, a flap forming a movable part of said table with one edge disposed along one side'of said opening and the opposite edge hinged to a fixed part of the stand, a supporting member for said bed-plate hinged to said table and normally disposed within said opening, actuating means whereby said supporting member is raised into and lowered out of operative position within said opening, a rock-lever mounted intermediate its ends upon a fixed fulcrum and having one end connected with said supporting member and the other end connected with the hinged table flap.

11. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, a flap forming a movable part of said table with one edge disposed along one side of said opening and the opposite edge hinged to a fixed part of the stand, a supporting member for said bed-plate hinged to said table and normally disposed within said opening, actuating means whereby said supporting member is raised into and lowered out of operative position within said opening, a crank-pin carried by said supporting member, a rocklever mounted intermediate its ends upon a fixed fulcrum and having one end formed with a cam-slot entered by said crank-pin and the other end connected with the hinged table-flap.

12. In a sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, a flap forming a movable part of said table with one edge disposed along one side of said opening and the opposite edge hinged to a fixed part of the stand, a supporting member for said bed-plate hinged to said table and normally disposed within said opening, actuating means whereby said supporting member is raised into and lowered out of operative position within said opening, a crank-pin carried by said supporting member,a rocklever mounted intermediate its end upon a fixed fulcrum and having one endformed with a cam-slot entered by said crank-pin and the other end connected by means of a link with the table-flap.

13. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, means for moving said bed-plate into and out of operative position within said opening, a movable supporting member disposed at the edge of said opening, and means for moving the same to; ward and from said opening and for communicating thereto respectively bodily rising and falling movements.

14. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate, means for moving said bed-plate into and out of operative position within said opening, a supporting slide-bar fitted to a slide-way in the table and adapted for endwise movement toward and from said opening, a vertically swinging support for the end of said slide-bar adjacent said opening, and means for communicating to said slide-bar its to-and-fro movements.

15. A sewing machine stand comprising a table formed with an opening to receive a sewing machine bed-plate and provided with an adjacent rigid seat, a movable extension-piece applied to said table and normally resting in operative position upon said seat to partially close said opening, a movable supporting member for said bedplate disposed within said opening, means whereby said supporting member is raised into and lowered out of operative position within said opening, and means including a rock-lever and connections at the opposite ends thereof, respectively, with said supporting member and the extension-piece whereby the latter is moved into and out of normal position while prevented from desewing machine bed-plate and provided with an adjacent rigid seat, a movable extensionpiece applied to-and normally resting upon said seat in operative position to partially close said opening, a movable supporting member for said bed-plate disposed within said opening, means whereby said supporting member is raised into and lowered out of operative position within said opening, and means including a rock-lever and positive and permanent connections at the opposite ends thereof respectively with said supporting member and the extension-piece whereby the latter is moved into and out of normal position while maintained wholly above said seat.

17. A sewing machine stand comprising a table formed with an opening to receive the sewing machine bed-plate, an extensionpiece hinged to said table and adapted when in normal operative position to partially close said opening, a supporting member for said bed-plate hinged to the table and disposed within said opening, means whereby said supporting member is raised into and lowered out of operative position within said opening, a rocking member carried by said table, and independentconnections from the same to Said supporting member and extension-piece whereby the lowering of the supporting member from operative position effects the raising of the extension-piece to expose that portion of the bed-plate opening in the table normally closed thereby.

18. A sewing machine stand comprising a table having a top formed with an opening to receive a sewing machine bed-plate, a supporting member for said bed-plate hinged to the table and adapted to enter said opening, an extension-piece hinged to the table at its edge most remote from the hinge of said supporting member and having its free edge normally substantially flush with that of said member and its intermediate portion overlying a part of the table affording a stop to prevent its descent below substantial parallelism with the table-top, and operating means for raising and lowering said extension-piece including an element connected with the latter and having an operative connection with the supporting member whereby it is moved out of and into initial position for each movement of the supporting member between extreme positions.

19. A sewing machine stand comprising a table having a top formed with an opening to receive a sewing machine bed-plate, a supporting member for said bed-plate hinged to the table and adapted to enter said opening, a cover-leaf hinged to said table, an operative connection intermediate said cover-leaf and the s i pporting member, an extension-piece hinged to the table at its edge most remote from the hinge of said supporting member, a fixed support for said extension-piece constituting a positive stop to prevent the descent of the latter below substantial parallelism with the table-top, a rock-lever,operatively connected with said extension-piece, and an operative connection between the supporting member and Said rock-lever for imparting to the latter two rocking movements respectively out of and into an initial position for each continuous movement of the supporting member.

20. A sewing machine stand comprising a top having an opening therein, a machinesupporting member mounted thereon to be raised from a position below said top to a position within said opening, an extension piece pivotally mounted on said stand independently ot' the member, and means including a rock-lever having connections at opposite ends respectively with said machine-supporting memher and extension piece whereby the latter is moved into operative position as the ma chine-supporting member rises.

21. A sewing machine stand comprising a top having an opening therein, a machinesupporting member mounted thereon to be raised from a position below said top to a. position within said opening, an extension piece pivotally mounted on said stand, and means, including a link connected with the extension piece and a rocking member pivotally connected with said link and with the machine-supporting member, whereby the extension piece is moved into operative position as the machinesupporting member moves into both operative and inoperative position.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

PHILIP DIEHL. MARTIN HEMLEB.

Witnesses:

HENRY J. MILLER, HENRY A. KORNEMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

machine-supporting

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