US3079881A

US3079881A - Enclosure for sewing machine feed mechanism

Info

Publication number: US3079881A
Application number: US798400A
Authority: US
Inventors: Bernard N Pierce
Original assignee: Merrow Machine Co
Current assignee: Merrow Machine Co
Priority date: 1959-03-10
Filing date: 1959-03-10
Publication date: 1963-03-05
Anticipated expiration: 1980-03-05

Description

March 5, 1963 B. N. PIERCE 3,079,881

ENCLOSURE FOR SEWING MACHINE FEED MECHANISM Original Filed June 11. 1954 9 Sheets-Sheet 1 ,kifix In 12 497260 r: Bernard NPierce y M YM flzb'jlttorneys March 5, 1963 B. N. PIERCE 3,079,881

ENCLOSURE FOR SEWING MACHINE FEED MECHANISM Original Filed June 11, 1954 9 Sheets-Sheet 2 In venfor: BernardMPierce 1 w {.012 :4 Jiis Attorneys B. N. PIERCE March 5,= 1963 ENCLOSURE FOR SEWING MACHINE FEED MECHANISM 9 Sheets-Sheet 3 Original Filed June 11, 1954 in vendor BermardA SPierm-e [fis- Attorneys B. N. PIERCE March 5, 1963 ENCLOSURE FOR SEWING MACHINE FEED MECHANISM Original Filed June 11, 1954 9 Sheets-Sheet 4 w r w e ,W R M; 0? 01m 6H AA d Us r ww n 2 B. N. PIERCE March 5, 1963 ENCLOSURE FOR SEWING MACHINE FEED MECHANISM 9 Sheets-Sheet 5 Original Filed. June 11, 1954 In 09 rate r: fiernardMPierc-e March 5, 1963 B. N. PIERCE ENCLOSURE FOR SEWING MACHINE FEED MECHANISM Original Filed June 11, 1954 2 Z; 1L7. r '9 Fig.14.

9 Sheets-Sheet 6 Fig-12.

fizventar: Bernard/VPz'erce \JLi /LK L r ii'a's Attorneys March 5, 1963 B. N. PIERCE 3,079,881

ENCLOSURE FOR SEWING MACHINE FEED MECHANISM 7 Original Filed June 11, 1954 9 Sheets-Sheet '7 l m 1 W h l "hl 11 imp I l|l|, l I \m" 621]! l I 68 49 In IHII U 50 Q I I 1 "II".

K65 gag 7527 7069 34 I! 78 I 2257i In 7 t hw' "1 6 luv! 58 lfl a1 I I lll h'l ml]- 1W nn .97

1 59.12 I l 11 U vi I II" 1! ml EW "d ii I 11 Inventor: Bern ard NPierce March 5, 1963 B. N. PIERCE ENCLOSURE FOR SEWING MACHINE FEED MECHANISM Original Filed June 11, 1954 9 Sheets-Sheet 8 Fig.18.

|m 48 68"" mm 53 I I A 9 Inventor:- fiernardfll'ierce His Attorneys March 5, 1963 B. N. PIERCE ENCLOSURE FOR sawmc; MACHINE FEED MECHANISM 9 Sheets-Sheet 9 Original Filed June 11, 1954 FIG. 22

INVEN TOR. BERNARD N. PIERCE CM w 6%;

A TTORNE YS ate 3&79381 3,079,881 ENCLOSURE FGR SEWENG MACHINE FEED MEfIHANlSM Bernard N. ierce, West Hartford, Conn, assignor to The Marrow Machine Company, Hartford, Conn, a corporation of Ionnectient Continuation of application Ser. No. 436,116, June 11, 1954. This application Mar. 16, 1959, Ser. No. 798,493 16 Claims. (61. 112-256) This application is a continuation of application Serial No. 436,116, filed June 11, 1954, now abandoned.

This invention relates to sewing machines and more particularly to a form of enclosure for feed mechanism in an overedge sewing machine of the Merrow type. The feed mechanism indicated includes certain movable parts presenting and supported by numerous bearing surfaces that preferably are constantly supplied with a fiow of lubricant. While such fiow of lubricant is relatively minute in quantity it accumulates on certain areas of moving parts and is thrown therefrom when the mechanism operates at speeds normal to its use. Lubricant thus discharged, as well as that draining from stationary surfaces, is especially objectionable when transferred to exposed areas of and adjacent the machine and to materials comprising the work.

Primarily, the object of the invention is to prevent oil discharged from bearing surfaces of a sewing machine feed mechanism from being transferred to areas where it would be objectionable and for conducting lubricant away from such areas to drainage ducts or parts to be lubricated. The invention resides in the arrangement of certain barriers forming a feed mechanism compartment presenting interior surfaces effective to intercept discharged oil and so disposed as to direct this oil away from objectionable areas into a sump where it is available for redistribution.

In the drawings:

FIG. 1 is an elevation of the left or head end or" a sewing machine embodying my invention;

Flu. 2 is a plan view of parts including the feed mechanism below the machine work plate shown in FIG. 1 showiru a portion of the machine frame in section;

FIG. 3 is a view showing the work plate as in FIG. 1 but with a feed mechanism compartment door omitted to show parts normally covered thereby, some of the parts being shown in section and others broken away;

FIG. 4 is a rear view of the head end of the machine, partially in section to show details of a support for a feed mechanism compartment door;

FIG. 5 is a partial sectional view of the front of the machine frame with the standard and certain parts of the mechanism omitted or broken away;

FIG. 6 is an elevation of a portion or" the front of the machine adjacent the head end;

FIG. 7 is a horizontal sectional view of the head end of the machine frame showing the portions of the feed mechanism compartment defined by the main machine frame;

FIG. 8 is a sectional view similar to FIG. 2 showing a guard that is shown only partially in FIG. 2 and also showing edge guides that overlie said guard;

FiG. 9 is a view similar to FIG. 3 showing a side elevation of a guard shown in plan in FIG. 8 and a standard in section taken on line 9-9 of FIG. 8;

' FIG. 10 is a rear side elevation similar to FIG. 4, with the rear wall plate, door, and work plate removed;

FIG. 11 is a detail view of the inner side of a feed cover ing door;

FIG. 12 is a detail sectional view on line 12-i2 of FIG. 1;

FIG. 13 is a detail sectional view on line 13-13 of FIG. 12;

FIG. 14 is a detail view of the inner side of a standard;

FIG. 15 is a cross sectional view of the feed mechanism compartment taken on the line 15-15 of FIG. 1;

FIG. 16 is an isometric view of the work plate supporting bracket;

FIG. 17 is a side elevational view of the work plate supporting bracket;

FIG. 18 is a cross sectional view taken on a vertical plane passing substantially centrally through the feed dog mechanism compartment;

FIG. 19 is a cross sectional view taken on the line 1.9-4.9 of FIG. 1; 7

FIG. 20 is a perspective view of the interior of the feed mechanism compartment, showing the door open, and with the feed mechanism, work plate supporting bracket, and work plate removed;

FIG. 21 is a perspective view of the sheet metal guard; and

FIG. 22 is an elevational view showing details of the inside of the rear wall plate.

Referring to the drawings, the sewing machine illustrated is substantially similar to the Merrow type overedge sewing machine. It includes a frame 1, base 2 and a mounting plate 3, all suitably secured together for support on the usual sewing machine table. Screws as 5 secure machine frame 1 and base plate 2 together with a suitable gasket 6 therebetween. Also interposed between the frame and base plate 2 are a gasket 7 and a filter plate 8. The filter plate overlies a depression or sump 9 in the base plate 2 and underlies a mechanism compartment 1% in the machine frame, see FIGS. 5 and 6.

Excess lubricant discharged from moving parts of the machine passes through filter plate 8 into sump 9 and is there available for redistribution by means not here shown. The main shaft 11 of the machine extends from mechanism compartment 19 through bearing bore 12 and therebeyond as at 13 to support elements of feed mechanism indicated in a general way by 14, see FIGS. 2 and 3. Feed mechanism 14 includes

feed dog carriers

15 and 16 and

links

17 and 18 for actuating respectively

carriers

15 and 16.

Beneath feed mechanism 14 is an end extension 19 of machine frame it which defines the lower wall of a feed mechanism compartment enclosing the feeding mechanism. The upper surface of extension 19 has formed therein a depression 26 and a groove 21, the latter being formed at the base of vertical end wall 22 on the machine frame 1. End of wall 22 defines a partition between main mechanism compartment 19 and the feeding mechanism compartment. This groove extends substantially across the Width of the machine frame so that the ends of the groove underlie respectively the lowermost end of a drainage groove 23 in the back face of a rear vertical wall 24 of the machine frame and a drainage groove 25 in the front face of forward vertical wall 26 of the machine frame, see FIGS. 1, 3, 6 and 8. Oil collecting on the exterior faces of the machine frame will accumulate in

drainage grooves

23 and 25 and be returned to the feeding mechanism compartment. Apertures 27 lead from groove 21 and are downwardly inclined toward filter plate 8 in the mechanism compartment 10 (FIGS. 5 and 7).

Lubrication for the feed mechanism may be provided in various ways. As shown, a duct 28 is provided for conducting lubricant from an upper shaft hearing as 29. This duct 28 extends through the machine frame 1 to hearing bore 12. For conducting lubricant from the bearing bore to feed mechanism 14, a spiral groove St} is provided in machine shaft 11.

Overlying feed mechanism 14 is a work plate 31 pivot-- ally supported as by pivot pin'35 on a bracket 32" which smaser is secured to machine frame 1 as by screws 33, see FIG. 3. The structure of brackct'32 may be best seen in FIGS. 16 and 17. At its upper portion bracket 32 is formed with a flat bearing surface 32:: which (FIG. 2) provides a bearing surface in opposition to a bearing surface formed on end wall 22% The opposed bearing surfaces on the bracket and end wall bear against the opposite sides of

feed dog carriers

15 and 16. The opposed bearing surfaces 32:: and end wall 22 are best shown in FiG. 10 in which the feed dog carriers do not appear for the sake of clarity. V In its normal position, work palte 31 is also supported by astandard 34 arising from the front of machine-frame extension 15. 'Pivotal pin 35 secured by set screw 36 permits the work plate to be swung from normal position to clear adjacent parts as for their inspection, replacement or adjustment. It will be observed that the structure thus far described defines certain walls of a compartment for feed mechanism 14. Machine frame extension 19 forms a base or floor, standard 34 forms a front wall, and vertical end wall 22 of the machine frame forms aside wall. To form a substantially complete enclosure or compartment 3? for feed mechanism 14, a rear wall plate 44 a door $1 and a sheet metal guard 74 are provided. While work plate 31 overlies compartment 39 it is especially to be understood that door 41 and guard 74 (to be described) toge .er with work plate supporting bracket 32, define the top wall of the compartment and serve to intercept lubricant discharged from feed mechanism parts toward the underside of the work plate as when the feed mechanism is operated at high speed.

The rear wall plate 40 is secured to the back of machine frame 1 by

screws

42, 43 and 44 and to bracket 32 by a screw 45. At the outer margin of wall plate 49;

bosses

47 and 43 support a pintle 49. Door 41 is similarly provided on its vertical rear edge margin with a boss 59 to receive pintle 49, to which the door is secured by set screw 51. Within boss t) is a counterbore 52 to accommodate to a spring 53 which is under compression between the bottom of counterbore 52 and boss 48. Tension of spring 53 constantly urges door 41 downwardly so that a latch pin 54 at the forward lower corner of the door is yieldably held in engagement with a keeper as 55 when the door is in closed relation, see FIGS. 1, 9, l2 and 13. Keeper 55 comprises a plate held in a recess 57 of the machine frame as by screws 58. A bore in keeper plate 55

present beveled'edges

59 and 60 over which, similarly beveled latch pin 4-7 rides, as when the door is opened or shut. When door 41 is shut, latch pin 54 is in engagement with beveled edge 6% and extends into a clearance hole 61 in machine frame 1. Under tension of spring 53, door 41 is held firmly in its closed relation but is readily yieldable under manual pressure upward to release latch pin 54 so that the door may be opened for access to feed mechanism 14.

Rear end wall plate 41 is provided with a fin 62 extended from the inner wall surface and inclined downwardly therefrom with its maximum width terminating at an apex 63 approximately central to the width of feed mechanism compartment 39. Thus, the outer edge of fin 62 is inclined downwardly from its ends toward apex 63. At one side a narrowed portion 64 of fin 62 extends into drainage groove 23 above mentioned. In a similar manner to the arrangement of fin as on rear end wall plate 49, door 41 is provided with a fin 65, with its maximum width substantially central of the door and terminating in an apex 66. At one end, fin 65 merges with boss 50 (see FIG. 11) and at its other end is elevated as at 67 so that it lies within a drainage groove 63 in standard 34- when door 41 is closed, see FIGS. 2 and 3. Between these ends the inner edge of fin 65 is inclined downwardly toward the apex 66.

Lubricant discharged from the feed mechanism may be intercepted and collected by rear wall plate 40 and door 41. This lubricant flows by gravity down these fins to their inclined edges and along the edges to the apex 63 and the apex 66, respectively; From these centrally disposed points, lubricant drops into depression 2% and lows adjacent standard 34 door 41 is flanged as at 69 to over lap an inner surface 7% of said standard. Door 41 is provided with a flange 71 to strengthen the door at this marginal edge. Flange 65* and the raised portion 67 of fin 65 cooperate with the standard'ii and the drainage groove 63 to intercept lubricant discharged toward the juncture of door 41 and standard 34 and return this lubricant along fin 65.

Referring now to FIG. 18 it is seen that the two level work plate 31 is supported for pivotal movement upon the horizontal upper surface of bracket 32. The top surface of bracket 32. is cut away (FIGS. 10 and 16) along the edge adjacent bearing surface 32a to form a 7 support surface or shoulder 72 which is inclined downwardly toward end wall 22. Tapped bores project downwardly through shoulder 72 to receive screws 73 (FIG.

10) which fixedly secure a sheet metal guard 74 to shoulder 72. Guard 74 projects from bracket 32 to an outer edge which overlies a shoulder 79 on end wall 22. Guard 74 thus overlies the space between the opposed bearing surfaces on end wall 22 and bracket 32 above

feed dog carriers

15 and 16 and below work plate 31. Guard 74 completely overlies the space (FIG. 15) between the inner edge 75 of work plate 31 and end wall 22 of the machine frame. The rear portion of guard 74 is bent downwardly (FIG. 10) into a rear flange "76 whose lower edge is inclined downwardly in a direction from end wall 22 to a terminal point 77 lying against the rear surface 78 of bracket 32. The side edge 30 (FIGS. 9 and 10) of guard 74 is likewise bent into a downwardly projecting flange whose lower edge is inclined downardly from rear flange 76 toward the front of the machine frame. The inclined lower edge terminates at a terminal point 81 which overlies an inclined section 82 on shoulder 79. It. is believed apparent that oil or lubricant collected on the surfaces of either of the downwardly projecting flanges of guard 74 will ilow downwardly to the respective lower edges of the flange and thence downwardly along the lower edegs to the respective terminal points. From terminal point 77 oil is transferred to the rear surface of bracket 32 and flows downwardly along the surface to the bottom of the feed mechanism compartment. Oil transferred to terminal point 81 drops from the point'onto inclined shoulder 82 and thence downwardly along end wall 22 to lubricate the bearing surface between feed dog carrier 15 and end wall 22.

The primary purpose of guard 74 is to intercept lubricant discharged toward the space between inner edge 75 of work plate 31 and end wall 22. Todrain any lubricant which may collect on the upper surface of the guard 74-, the upper surfaces of sheet metal guard '74 are inclined (FIG. 10) in two sections connected by a centrally located step. Lubricant which is collected may flow from the upper surface of guard 74 either outwardly over edge 84 or through bores 83 (PEG. 8) which pass through the guard at the step. Lubricant passing through bores 83 flows down bearing surfaces 32a between this surface and the adjacent feed dog carrier 16. The inner side edge 75 of work plate 31 is cut back as at 75:: (FIGS. 8 and 15) and the front portion of guard 74 is projected upwardly as at 74a to completely fill this space, the upper surface of guard 74- at section 74a being substantially coplanar with the upper surface of the two level work plate 31 adjacent guard section 74a.

- Partly overlying a shoulder 79 on end wall 22, is the distal edge or flange 8d of guard plate 74. This edgei 8t? is inclined forwardly downwardly to a point 81 beneathwhich is a surface 82 downwardly inclined to an edge coincident with the vertical surface of end wall 22, see FIGS. 8, 9 and 10.

Between machine frame extension 19 and standard 3 is interposed a plate 87 which is interchangeable with similar plates of different thickness so that substitution of one plate for another provides for supporting work plates in sli htly different planes to meet various requirements.

On the side of standard 34 opposed to end wall 22,

separate surfaces

33 and 89 are provided, and these engage the surface of wall 22 when the standard 34 and its base plate 87 are secured in place by screws as 9% and 91. Between these surfaces 88 and $9 and opposed to the wall 22 is a channel 92 communicating with groove 21. Thus, held by screws f0 and 93., the upper part of standard 34 presents, in spaced relation, and opposed to surface 22, a surface 93 intercepted by a shallow channel 94 inclined downwardly toward the interior of feed mechanism compartment 39. The lower side wall of channel 94, in a widened surface 95, extends to channel 92.

Secured to machine frame 1 by screws as 96, is a thin metal shield 97, partly closing mechanism compartment 10 and havingone edge or margin 98 thereof extending across the space between machine frame surface 22 and the opposing surface of standard 34, that is, the surface which is crossed by channel 94. Secured to the outwardly and downwardly inclined inner surface 99 of shield 97 is a fin 10! extending from edge 98 of shield 97, and thence leading into mechanism compartment 13.

Flow of lubricating oil from a source of supply to feed mechanism 14 and thence eventually to sump 9, takes place as follows: Oil at bearing bore 29 passes into duct 28, thence to hearing bore 12, thence to spiral groove 39, and thence to various elements of feed mechanism 14. Lubricant in addition to that delivered from duct 28 flows from a supply of lubricant furnished needle carrier pivotal support 83 and mechanism (not shown) for actuating needle carrier 84, thence drains from machine frame surface 85 to inclined surface 82, to the face of end wall 22, and thence onto feed mechanism 14-.

Excess oil from the feed mechanism is partly discharged, as from moving elements, in the form of spray and partly drains to stationary surfaces contiguous to moving parts from whence it gravitates more or less directly into sump 9. By reference to FIG. 2 it will be observed that vertical planes of contact occur in lateral support of certain elements of feed mechanism 14, viz., between surface 22 and feed dog carrier 15; between surface 32a and feed dog carrier 15; between

feed dog carriers

15 and 15; between feed dog carrier 16 and link 17; and between

links

17 and 18. It is in these planes primarily that lubricant is discharged toward the underside of work plate 31 from feed mechanism 1d when it is being operated at high speed. It is important that this discharged lubricant be intercepted in its approach toward the underside of the work plate 31 because vibration of the work plate moves the lubricant to the edge of the plate where it would be taken up by the material of the work. Barriers are therefore interposed between the feed mechanism 14 and the work plate 31 including work plate bracket 32, inwardly inclined wall 36 of door 41,

and sheet metal guard '74. See FIGS. 2, 8 and 9.

The several barriers above indicated and serving to form a feed mechanism enclosure or compartment, also present various depending p ints, and suitably disposed and inclined channels and surfaces which are effective to prevent objectionable escape of oil to exterior areas. These oil directing surfaces, channels and'points from which draining oil is discharged to appropriate areas, include channels 23, '25 and 68; fin 62 extending from wall plate 49 and terminating in point 63 overlying depression 28; fin 65 extending from door 41 and terminating in point 66 overlying depression 2%; guard plate 74 having a flange 76 terminating in point 77, contiguous to surface 78 of bracket 32; a downwardly inclined flange comprising distal edge 8t) of guard plate 7 terminating in point 31 overlying inclined surface 82', inclined channel 94 in standard 34; and fin 10% secured to shield 97, the edge or margin 98 of which overlies inclined surface extending from channel 94. Oil gravitating on surface 22 passes directly into drainage groove 21 except where it is obstructed at areas where surfaces 88 and 89 engage surface 22. The diverting effect at these areas, however, is only slight and drainage is suitably directed by surfaces 95, while between these areas oil on surface 22 passes through channel 92..

The arrangement of barriers forming the feeding mechanism compartment, with the ducts and shields described, is effective to prevent objectionable transfer of lubricant to areas where it would contact the work, and it is to be noted that advantages derived are achieved without recourse to the expedient of combining a compartment door and a Work plate in a single cumbersome element.

Having thus described my invention, what I claim is:

1. In a sewing machine, a machine frame defining a 'main mechanism compartment having front and rear side walls and a feeding mechanism compartment at one end of said frame, an end wall in said frame extending between said side walls and forming a partition between said compartments, said end wall having a plurality of drainage ducts extending therethrough inclined downwardly from said feeding mechanism compartment for conducting lubricant from the bottom of said feeding mechanism compartment into said main mechanism compartment, one side wall of said frame having an exposed face formed with a groove having a lower wall extending inwardly and downwardly from said face and inclined downwardly to said end wall and said feeding mechanism compartment to collect lubricant from said face and to conduct lubricant into said feeding mechanism compartment, and a wall plate mounted on said frame overlying 'the portions of said exposed face and said groove adjacent said end wall and projecting beyond said end wall to deline a wall of said feeding mechanism compartment.

2. In a sewing machine having a machine frame, a feeding mechanism compartment at one end of said frame comprising an end wall on said end of said frame, a. base extending from said frame at the bottom of said wall, a standard extending upwardly from the front portion of said base, a rear wall plate overlying the rear face of said frame and extending outwardly from said end wall, means defining a top wall extending from said rear wall plate toward said standard, a door mounted for pivotal movement about a vertical axis upon the outer end of said rear wall plate for movement to and from a closed position wherein said door closes the space between said rear wall plate, said top wall defining means, and said standard, and a work plate pivoted on a vertical axis 'said end wall and extending outwardly along said base from said end wall, means defining a top wall extending from said rear wall plate toward said standard, a door piv- .oted on said plate for movement to and from a closed position wherein said door closes the space between said plate, said top wall defining means and said standard, and a work plate mounted for. pivotal movement about a vertical axis and overlying said top wall, said machine frame having drainage grooves formed in its front and rear faces, said grooves sloping upwardly from said end Wall to con- 7 duct lubricant from said faces into said feeding mechanism compartment.

4. In a sewing machine having a machine frame, a.

feeding mechanism compartment at one end of said frame, and an end wall mounted on said frame and forming a partition between said compartment and said frame, the improvement which comprises a rear wall plate at the back of said compartment overlying a portion of the rear face of said frame and the bottom of said compartment and forming a rear wall of said compartment, a drainage groove formed in the rear face of said frame extending beneath said rear wall plate and inclined upwardly from said feeding mecahnism compartment at said end wall, and a fin on the inner surface of said plate'sloping downwardly therefrom and extending into said drainage groove to conduct lubricant from said plate into said compartmerit.

. 5. In a sewing machine having a machine frame, a feeding mechanism compartment at one end of said frame having a lubricant receiving recess at its bottom, and an end wall mounted on said frame and forming a partition between said compartment and said frame, the improvement which. comprises a rear Wall plate at the back of said compartment overlying a portion of the rear face of said frame and the bottom of said compartment and forming a rear wall of said compartment, and a fin on the inner face of said plate increasing in width from both ends of said plate toward a central apex and sloping downwardly from said plate to conduct lubricant from said plate into the central portion of said compartment.

6. In a sewing machine having a machine frame, a feeding mechanism compartment at one end of said frame having a lubricant receiving recess in its bottom, and an end wall mounted on said frame and forming a partition between said compartment and said frame, a rear wall plate at the back of said compartment overlying a portion of the rear face of said frame and the bottom of said compartment and forming a rear wall of said compartment, and a fin on the inner face of said plate sloping downwardly therefrom, the inner edge of said fin sloping downwardly from its ends toward its center to conduct lubricant from said plate into the central portion of said compartment.

7. in a sewing machine having a machine frame, a feeding mechanism compartment at one end of said frame, an end wall mounted on said frame and forming a partition between said compartment and said frame, and a work plate above said compartment, the improvement which comprises a shoulder on said end wall below said work plate having a surface sloping downwardly toward said' mechanism compartment, and a guard disposed beneath said work plate adjacent said end wall to intercept lubricant directed upwardly from mechanism in said compartment, said guard having a flange above said shoulder to direct intercepted lubricant onto said surface for return into said compartment.

8. In a sewing machine having a machine frame, a

feeding mechanism compartment at one end of said frame,

an end wall mounted on said frame and forming a partition between said compartment and said frame, and a work plate above said compartment, the improvement which comprises a shoulder on said end wall below said }wardly from the rear end thereof to a low point overlying said surface to direct intercepted lubricant onto said surface for return into said compartment.

9. In a sewing machinehaving a machine frame, a

mechanism compartment in said frame, a feeding mechanism compartment at one end of said frame, an end wall mounted on said frame and forming a partition between said compartments, and a standard forming a front wall lubricant from said shield into said mechanism compartment.

it). In a sewing machine having a machine frame feeding mechanism operatively supported upon said frame at one end thereof, of end wall at said one end of said frame having an outwardly projecting shoulder thereon and a bearing surface extending downwardly from said shoulder, a bracket fixedly mounted upon said end wall and having a bearing surface thereon located in opposed spaced relationship with the bearing surface on said end wall, the opposed bearing surfaces of said end wall and said bracket slidably receiving portions of said feed mechanism therebetween, a guard fixedly secured upon said bracket and projecting from said bracket across the space between said bearing surfaces to overlie said shoulder on said end wall, and a work plate pivotally mounted on said bracket for movement to and from an operative position above said guard.

11. In a sewing machine having a frame, feeding mechanism operatively supported upon said frame at one end thereof, an end wall at said one end of said frame having an outwardly and downwardly inclined shoulder thereon and a bearing surface extending downwardly from said shoulder, a bracket fixedly mounted upon said end wall and having a bearing surface thereon located in opposed spaced relationship with said bearing surface on said end wall, the opposed bearing surfaces of said end wall and said bracket slidably receiving portions of said feed mechanism therebetween, a shoulder on said bracket extending from said bearing surface on said bracket in a direction away from said end wall and defining the upper edge of anism operatively supported upon said frame at one end thereof, an end wall at said one end of said frame having an outwardly and downwardly inclined shoulder thereon and a bearing surface extending downwardly from the outer edge of said shoulder, a bracket fixedly mounted upon said end wall and having a bearing surface thereon located in opposed spaced relationship with said bearing surface on said end wall, the opposed bearing surfaces on said end wall and said bracket'slidably receiving portions of said feeding mechanism therebetween, a shoulder on said bracket extending from said bearing surface on siad bracket in a direction away from said end wall and defining the upper edge of said bearing surface on said bracket, a sheet metal guard fixedly mounted upon theshoulder on said bracket and projecting therefrom across the space between said opposed bearing surfaces to terminate in a downwardly projecting flange extending along and overlying said shoulder on said end wall, and a work plate mounted on said bracket for pivotal movement about a vertical axis to and from an operative position above said guard.

13. In a sewing machine having a machine frame,

feeding mechanism operatively supported upon said frame at one end thereof, an end wall at said one end of said frame having an outwardly projecting shoulder thereon and a bearing surface extending downwardly from the outer edge of said shoulder, a bracket fixedly mounted upon said end wall and having a bearing surface thereon located in opposed spaced relationship with said bearing surface on said end wall, the opposed bearing surfaces of said end wall and said bracket slidably receiving portions of said feed mechanism therebetween, a shoulder on said bracket extending in a direction away from said end wall and defining the upper edge of said bearing surface on said bracket, a guard fixedly mounted upon one of said shoulders and extending across the space between said opposed bearing surfaces to overlie the other of said shoulders, an upper surface on said bracket elevated above said shoulder on said bracket, and a work plate supported upon said upper surface for pivotal movement above a vertical axis.

14. In a sewing machine as defined in claim 13, both of said shoulders being inclined downwardly toward said bearing surfaces, a downwardly projecting flange extending along the edge of guard above said other of said shoulders, said guard having a plurality of bores therethrough between the bearing surfaces of said shoulders.

15. In a sewing machine as defined in claim 14, a lower edge on said flange inclined downwardly to a terminal point located above said other of said shoulders.

16. In a sewing machine having a machine frame, a feeding mechanism compartment at one end of said frame, and a standard forming a portion of the front Wall of said compartment, the improvement which comprises a door hingedly mounted on the rear wall of said compartment and extending to and overlying one side of said standard and the bottom of said compartment to close the 10 end of said compartment, said standard having a groove inclined downwardly along said one side of said standard toward said rear wall and opening into said compartment, and a fin sloping downwardly from the inner side of said door extending into said groove.

References Cited in the file of this patent UNITED STATES PATENTS 1,189,466 Mekeel July 4, 1916 1,423,243 Mofiatt July 18, 1916 1,876,708 McPherson Sept. 13, 1932 2,157,371 Weiss May 9, 1939 2,284,474 Peets et a1 May 26, 1942 2,286,441 Sauer June 16, 1942 2,331,272 Herr Oct. 5, 1943 2,390,571 Colegrove Dec. 11, 1945 2,411,459 Perkins et al Nov. 19, 1946 2,596,728 Sauer et a1 May 13, 1952 2,604,865 Peets July 29, 1952 2,627,829 Wallenberg et a1. Feb. 10, 1953 2,627,830 Ritter Feb. 10, 1953 2,684,652- Peterson et al July 27, 1954 2,762,324 Hess Sept. 11, 1956 FOREIGN PATENTS 698,010 Great Britain Oct. 7, 1953

Claims

1. IN A SEWING MACHINE, A MACHINE FRAME DEFINING A MAIN MECHANISM COMPARTMENT HAVING FRONT AND REAR SIDE WALLS AND A FEEDING MECHANISM COMPARTMENT AT ONE END OF SAID FRAME, AN END WALL IN SAID FRAME EXTENDING BETWEEN SAID SIDE WALLS AND FORMING A PARTITION BETWEEN SAID COMPARTMENTS, SAID END WALL HAVING A PLURALITY OF DRAINAGE DUCTS EXTENDING THERETHROUGH INCLINED DOWNWARDLY FROM SAID FEEDING MECHANISM COMPARTMENT FOR CONDUCTING LUBRICANT FROM THE BOTTOM OF SAID FEEDING MECHANISM COMPARTMENT INTO SAID MAIN MECHANISM COMPARTMENT, ONE SIDE WALL OF SAID FRAME HAVING AN EXPOSED FACE FORMED WITH A GROOVE HAVING A LOWER WALL EXTENDING INWARDLY AND DOWNWARDLY FROM SAID FACE AND INCLINED DOWNWARDLY TO SAID END WALL AND SAID FEEDING MECHANISM COMPARTMENT TO COLLECT LUBRICANT FROM SAID FACE AND TO CONDUCT LUBRICANT INTO SAID FEEDING MECHANISM COMPARTMENT, AND A WALL PLATE MOUNTED ON SAID FRAME OVERLYING THE PORTIONS OF SAID EXPOSED FACE AND SAID GROOVE ADJACENT SAID END WALL AND PROJECTING BEYOND SAID END WALL TO DEFINE A WALL OF SAID FEEDING MECHANISM COMPARTMENT.