US1062546A

US1062546A - Broom-sewing machine.

Info

Publication number: US1062546A
Application number: US58552510A
Authority: US
Inventors: Andrew E Miller
Original assignee: HAMILTON CASSARD
Current assignee: HAMILTON CASSARD
Priority date: 1910-10-05
Filing date: 1910-10-05
Publication date: 1913-05-20
Anticipated expiration: 1930-05-20

Description

A. E. MILLER.

BROOM SEWING MACHINE. APPLIUATION FILED 0OT.5, 1910.

1,062,546. Patented May 2o, 1913.

11 SHEETS-SHEET 1.

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wit" @Mela A. E. MILLER. BROOM SEWING MACHINE.

APPLIUATION FILED 0OI'.5, 1910.

1,062,546. Patented May 20, 1913.

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/2 /20 //7 A @Cy 21 COLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

A. E, MILLER. BROOM SEWING MACHINE.

APPLIOATION FILED 0012.5, 1910.

1,062,546. PatenteaMay 20,1913.' d

11 SHEETS-SHEET 3.

MLM 331.'. W L

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COLUMBIA PLANOGRAPH C0..WASHINOTON. DA c.

A. E. MILLER.

BROOM SEWING MACHINE.

APPLIOATION FILED oom, 1910.

1,062,546. Patented May 2o, 1913.

11 SHEETS-SHEET 4.

CDLUMEIA PLANDGRAPH co., WASHINUTON, D. c.

' A. E. MILLER. BROOM SEWING MACHINE. APPLICATION FILED 0GT.5, 1910.

1,062,546. Patented May 20, 1913.

11 SHEETS-SEEET 5.

I y @im DLUMBM PMNOURAPH C0., WASHINGTON. D. C.

A. E. MILLER. BROOM SEWING MACHINE. APPLIOATION FILED 001.5, 1910.

COLUMBIA PLANOURAPH c0..wAsHlu'rc|N, D. c.

A. E. MILLER.

f EEooM SEWING MACHINE.

11 SHEETS-SHEET 7.

0o Ya @Mwah ccLUMBIA PLANQGRAPH CO., WASHlNuToNY n. c.

A. E. MILLER. BRooM SEWING MACHINE.

APPLICATION FILED 0T.5, 1910. 1,062,546. Patented May 20, 1913.

I 11 SHEETS-SHEET 8.

V COLUMBIA PLANOGRAPH C0..WAsHING'roN. n. c.

A. E. MILLER. BROOM SEWING MACHINE. APPLIOATION FILED oom, 191.0. Patented Maygo, 1913.

11 SHEETS-SHEET 9.

COLUMBIA PLANOGRAPH ccwAsM|NaToN, D. c.

A. E. MILLER. BROOM SEWING MACHINE. APPLICATION FILED 00T.5, 19410.

Patented May .20, 1913.

11 SHEETS-snuit).

A. E. MILLER.

BROOM SEWING MACHINE.` APPLICATION FILED 00T;5, 1910. 1,062,546 Patented May 20, 1913.

. l1 SHEETS-SHEET 11.

CQLUMBIA PLANOGRAPH b..wAsHlNGTON, .c.

Fig. 9.

TTED STATES PATENT FFTCE.

ANDREW E. MILLER, OF BALTIMORE, MARYLAND, ASSIGNOR TO HAMILTON CASSARD, OF BALTIMORE, MARYLAND.

BROOM-SEWING MACHINE.

T0 all whom t may concern.'

Be it known that 1, ANDREW E. MILLER, a subject of the King of England, residing at Baltimore city, in the State of Maryland, have invented certain new and useful 1mprovements in Broom- Sewing Machines; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in broom sewing machines, and it comprises several different improvements.

The main objectpof my invention is to produce a cheap and simple machine, semiautomatic in action, which will efciently stand the wear and tear'to which said machines are subjected.

Further objects of my invention are to provide for the use of rotaryfmotions wherever possible, with direct action and positive feed.

Further objects will appear in the detailed description.

W'ith these objects in view, my invention consists in the construction and combinations of parts as hereinafter described and claimed.

1n the accompanying drawings, which illustrate a complete machine embodying my invention-Figure 1 is a side view of the complete machine with one of the gear covers removed. Fig. 2 is a front view of the same. Fig. 3 is a rear view of the same with one of the gear covers removed. Fig. l is a side view of the machine, taken on the side opposite to Fig. 1. Fig. 5 is a vertical cross section through the vise and its related parts. Fig. 5a is a view on a smaller scale, showing that the pivot of one of the vise arms, the top of the corresponding vise aw, and the pivot of the operating needle are in the same straight line. Fig. 6 is a longitudinal vertical section through the vise. Fig. 7 is a horizontal cross section of the vise. Fig. 8 is a cross section on the line 8-8 of Fig. 9 is a side view of the curved gears for moving the vise up or down. Fig. 10 is a plan view partly in section showing the broom band, needles and vise, the latter being shown in dotted lines. Fig. 11 is a similar view showing `the operation of the unthreading device. Fig. 12 is a top view showing the movement of the needles, the

Specification of Letters Patent.

Application filed October 5, 1910.

Patented May 2o, 191s. Serial No. 585,525.

vise, supporting parts and needle operating means being shown in dotted lines. Fig. 13 is a perspective view on an enlarged scale of one of the needles. Fig. 14 is a cross section of one of the needles on the line 1&14 of Fig. 13. Fig. 15 is a cross section of a part of the gearing operating the threader. Fig. 16 is an end view of the left-hand end of Fig. 15. Fig. 17 is a cross section on the line 17-17 of Fig. 15, and Fig. 18 is a cross section, taken at right angles to the plane of section of Fig. 15, and lshowing part of the threader-operating gearing.

The main frame of the machine is made of heavy material, preferably cast iron, and consists of two parallel upright pillars a and b, united by a web a', and supported on a base cl. This base is not at right angles to the pillars a and Z) but inclined thereto, the line e, Fig. 1, indicating the floor line. A space f is left between the pillars a and 0 into which the vise may be swung and held during the sewing operation. g is a cross brace uniting the pillars a and Z) on one side, near the center.

Bolted or otherwise rmly attached to the pillar b is a bracket 71 in which is mounted a shaft z'. To the pillar a is similarly fastened a bracket j, in which is mounted a shaft 7c. Secured to the shafts and 7c by bolts 0 is a bracket or casting m, cut away as shown at a, Fig. 5. These two shafts z' and are lthe pivotal supports on which the broom-holding vise is supported and rocked, as hereinafter described. A lever g is secured to the casting m and has ears r eX- tending down below the shaft 7c. This lever is moved by the operator to shift the vise from the position shown in Fig. 1 to that shown in Fig. 2. Similarly the bracket m is provided with downwardly-extending ears s.

The broomsholding vise comprises two opposed pivotally-mounted jaws t and u. The jaw t is mounted upon a pivot shaft or pin o in the ears s by means of downwardlyextending arms y and 2, bent so as to cross the arms of the other jaw, Fig. Similarly the jaw u is supported by two bentv arms fw and a', upon the pivot pin or shaft z, mounted in the ears r. The jaws t and u are similarly shaped, but oppositelylisposed, as best shown in Fig. 5. Each jaw has a fiat side plate 4L, two end plates, such as 5, and an inwardly-inclined top 6, see Fig. 5, the

bottom o-f the jaw being open. lVithin the jaws are t-he clamps 7 and 8, which slide freely up and down in the jaws, but are secured against lateral displacement by the guides, 9 and 10, projecting inwardly from each of the end plates These clamps are best shown in Figs. 5, 6 and 7. They are similarly shaped, but oppositely disposed. Each of them consists of a back plate 11, having its top bent inwardly, as shown at 12, and downwardly-projecting guide pieces 13, cach provided with an ear 14, to which ears are attached the

rods

15 and 16, by

. means of which rods and 16, the clamp may be moved up and down. Each clamp is further provided with a projecting piece 17, and the end of the back plate 11 is provided with an inwardly-extending end piece 18, nearly vertical, and terminating in a horizontal extension 19, cut away as shown at 20, and then extending slightly inward, as shown at 21, Fig. 7. Thus a space 22, Fig. 7, is left, in which the broom handle is received, and the other parts just described firmly engage and hold the broom in position when the jaws are brought together, as hereinafter described. This closing of the jaws, and thereby of the clamps, is accomplished as follows Tn the end plate 5 of one of the jaws is mounted a shaft 23, extending outside of said end plates a short. distance. To this shaft 23, near one end, is splined, or otherwise fastened, a ratchet wheel 24, Fig. 2. An operating handle 25 is loosely mounted on the shaft 23, on which handle is pivotally mounted a pawl 26, spring pressed or not, as desired. Extending downwardly from the shaft 23 is an arm 27, in the lower end of which is supported one end of a stub shaft 28, the other end of said shaft being supported on one of the jaw arms. On the shaft 28 is loosely mounted a pawl 29, having a projecting end 30. This pawl is constantly pressed against the ratchet wheel 23 by the spring 31, coiled around the shaft 28. Attached to the jaws t and a are a number of guide pulleys, such as 32 and 33, in sockets or bearings 35. Around these pulleys passes a sprocketchain 34, back and forth from one jaw to the other, one end of this chain being attached to a pin on one of the jaws, and the other end to the shaft 23. The parts just described are shown on Fig. 2, and the arrangement on the other side of the jaws, shown on Fig. 3, is substantially the same, as far as the guide pulleys and chain are involved.

By the construction just described, successive reciprocating movements of the handle 25 tighten up the chains and clamp the broom firmly between the jaws. Vhen it is desired to release the broom, after it has been sewed, the pawl 26 is lifted, and the handle 25 swung until it strikes the part 30 of the pawl 29, thereby releasing the ratchet wheel 24, and the jaws fall apart by their own weight.

The means for raising and lowering the broom clamps, so that successive rows of stitches may be sewed, will next be described. To each of the clamps is attached two rods, such as 15 and 16, Fig. 6. The lower ends of the

rods

15 and 16 approach each other and are secured in a casting 36, which casting is mounted on a pin 37 which projects from the end of an arm 38, Figs. 6 and 8. Mad-e integral with the arm 38 is a cross arm 39, having perforated ears 40 and 41, by means of which the arm 39 is mounted on the shaft 2. To the cross arm 39 is secured, or made integral therewith, the arm 42 parallel to the arm 38, which arm 42 carries the sector gear 43. Similarly the rods from the other broom clamp ar-e pivotally connected to the pin 44 on the arm 45, which arm carries a sector gear 46, meshing with the gear 43. The outer end of the arm 45 is enlarged and bored out, as shown at 47, forming a bearing, which engages the shaft or pin o. Made integral with this bearing, and extending downwardly therefrom,is an extension 48, said extension and the arm 45 forming a bell-crank lever. To the extension 48 is firmly bolted an operating handle 49, Fig. 2. Obviously, by means of the connectionsl just described, a movement of the handle 49, one way or the other, will raise or lower the broom clamps. The handle 49 is held in one of its adjusted positions by means of a curved and notched bar 50, carried by one of the j aw-supporting arms.

The centering of the vise jaws and broom clamps so that they will firmly hold the broom, no matter of what size, shape or weight, when the handle 25 is reciprocated to bring the jaws together, is accomplished by the following means:

Each jaw is provided with a roller, numbered 51 and '52 on Fig. 5. One of these rollers is mounted on the shaft 23, and the other on a shaft parallel thereto. Between these rollers is a spear-head 53, with which said rollers contact. The spear-head is carried on the end of a sliding arm 54. This arm slides freely in slotted guides 55 in the two-armed bracket m. To one arm of said bracket m is bolted a downwardly-extending curved arm 57, which, striking against the brace g, acts as a stop to prevent the vise from swinging out too far when the sewing is finished.

The sliding arm 54, by its movement, actuates the horizontal arm 58 of a bell-crank lever pivotally mounted on a pin or shaft 60. This arm 58 has one end slotted, and this slotted end embraces a block 56, pivoted on the arm 54. The vertical arm of said bell-crank lever has connected to it by a pin 61 a link 62, the other end of which is pivotally connected to a sleeve 63, which slides freely on the shaft z', Figs. 2 and 5. The sleeve 63 is provided with two ridges 64, between which is located a pin on the to of an arm 65, fastened to t-he shaft 66, which is freely mounted in a long bearing 67, secured to one of the pillars. To the other end of the shaft 66 is secured a downwardly-extending arm 68, the lower end of which has attached to it by nuts 69 a pin 70, which engages with an ear of a screwthreaded sleeve 71, which is adjustably secured to one end of a bent link 72, the other end of which is pivot-ally attached to a sleeve 73. This sleeve 73 is loosely mounted on an arm 7a, which is loosely mounted on the shaft 75, which feeds the vise sidewise, after each stitch, with an intermittent motion. The rod 74 is attached to a sleeve 7 6 mounted on the shaft 75, andto this sleeve 7 6 is attached an arm 77, which at its upper end carries a pawl 78, pressed by a spring 79, into engagement with the teeth of a ratchet wheel 80, which is keyed or otherwise fas` tened to the shaft 75. To the sleeve 73 is pivotally 'attached a connecting rod 81, which operates to feed the ratchet wheel 80 with an intermittent motion, and is operated by means hereinafter described. This swings the vise, after each stitch, to the proper position for another stitch. A spring 82 is attached at one end to the rod 81, and at the other end to a suitable support, and this spring, by the connections just described, holds the spear-head `53 constantly in cont-act with the

rollers

51 and 52.

Tt will thus be seen that the thickness of the broom automatically determines the rate of feed, rendering unnecessary adjustment of the feeding mechanism according to the size of the broom.

83 is the main driving shaft, and is mounted in suitable bearings carried by the pillars. On this shaft is loosely mounted a driving pulley 84, operated by a constantly-running belt, not shown. To the shaft 83 is keyed one member 85 of a cone clutch, the other member being formed on the inside of the pulley 8a. The pulley 84 is slid along the shaft 83 by an ordinary fork 86, carried on the vertical arm 87 of a bell-crank lever, which lever is pivoted at 88 upon a stud 96, attached to and projecting from one of the pillars. The horizontal arm 89 of this bell-crank lever has pivoted to it at 90 the upper end of a rod 91, the lower end of which is pivotally attached at 92 to a footlever 93, whiclris pivoted at 94 to the base of the machine, and is provided with a treadle 95. Obviously, the operator, by pressing down the treadle., will throw the pulley 84., so as to cause the members of the cone clutch to en gage, thus operating the machine. When the operator removes his foot from the treadle, the weight of the parts and the resist-ance offered by the machine will ordinarily cause the members of the clutch to separate, but, if desired, a spring may be placed under the lever 93 for this purpose. On the stud 96 is loosely mounted a long sleeve 97, made integral with which, or attached to it, is a bell-crank lever, having an upwardly-extending arm 98 and a horizontal arm 99. To the outer end of the arm 99 is pivotally attached, by a universal oint, the upper end of the rod 81. The upper end of the arm 98 has, loosely mounted upon it, a pulley 100 which engages with a cam 101, which forms a part of the member 85. A spring 102, coiled around the stud 96, and fastened at one end to a sleeve 103 fast on said stud, and at the other to the sleeve 97, keeps the roller 100 always in contact with the cam 101. TheA movement of the cam 101 causes the rod 81 to rise and fall, thus operating the ratchet wheel 80, and thereby the feeding mechanism, with an intermittent motion.

The feeding mechanism is operated by the ratchet wheel 80 by means of the following connections: To the pillar a. is attached a large gear casing 104, and in suitable bearings therein the shaft is mounted. This shaft has fastened to it a worm wheel 105, u

which meshes with a large pinion 106, loosely mounted on the shaft 7c, said wheel and pinion being indicated in dotted lines on Fig. d. On one side of it, this pinion has an Leshaped extension 107, which serves as a bearing for a strap 108. One end of this strap is adjustably fastened by a bolt 109, in an ear 110, on the lever q. The other end of the strap is fastened to a bell-crank lever 111, pivoted at 112 on the lever q. Pivotally mounted on the lever 9 1, at 113, is a locking lever 114, having a pin 115, adapted to engage the bell crank lever 111. the whole construction forming a band clutch.

When the parts are in the position shown in Fig. e', the clutch is locked, but when the lever 114 is thrown up, so as to be parallel with the lever (j, the clutch is unlocked, as whenv the vise is swung into position at the beginning of the operation of sewing a broom.

@ne object of this machine is to imitate hand sewing, in which the band passes first under and then over the part thereof wrapped around the broom.

The needles are of the form shown in F ig. 13, and consist of a curved part 110, having an eye 117 and a slot in which a stop device 118 slides, to open or close the eye. The needle is firmly fixed in one arm 119 of a bell-crank lever which has a bearing 120, and the other arm 121 of which also has a bearing 122 on its outer end for the reception of a. pivot pin. The stop piece 118 has an extension 123 to which is fastened the lower end of a' bent spring bar 124. This spring bar passes through a bearing 125 attached to the arm 119. The needles are so arranged that their paths cross each other in the center of the broom, as shown in Fig. 12.

The means for operating the needles will next be described.

Mounted on the top of each of the pillars by bolts, or any suitable securing means, is a casting 126, terminating in a shaft 127, on which the bearing 120 is mounted. 0n a pin passing through the bearing are mounted the two ends of a split connecting rod 128, between the parts of which the needle passes. The lower end of this rod is pivotally attached to a pin 129 on a crank 130, mounted on a shaft 131 in bearings 132 on one of the pillars. On the shaft 131 is mounted a pinion 133 which meshes with a worm wheel 134 on the shaft 83. Obviously, the rotation of the shaft 83 will, by the connections just described, cause the reciprocation of the needle. A gear cover 135 conceals the gears just described.

The construction of the needle, its operating mechanism, and the threader and unthreader mechanism are substantially the same on both sides of the machine, and therefore only one side will be described.

1t should be noted that when the needle has made its forward stroke through the broom, the pivot of the jaw-supporting arm, the top of the corresponding jaw, the center of the corresponding needle, and the pivot of said needle, are in the same straight line, as shown in Fig. 5a. This insures that the path of the needle shall always be correct, through the broom, at an angle to its horizontal central line, under the band at the side nearest the needle pivot and above it on the other side, and also insures that the band shall be drawn through the broom in a W-shaped path, as in hand-sewing. It should also be noted that, as usual in broom sewing machines, the thread or band, is not pushed through the broom, but drawn through it, necessitating the threading and unthreading of a needle at each stitch.

vThe unthreading mechanism will next be described. In some of the figures, this mechanism has been omitted, to avoid complication, but it is shown in Figs. 1 and 3. It consists of an arm 136 xed to the shaft 83 and terminating in a spool 137, largest at the outer end, as best shown in Fig. 11. The unthreader may be arranged to take either the tight end or the loose end of the thread or band, as desired.

rFhe threading mechanism will next be described, reference being made to Figs. 10-18. It consists of a cylindrical casting 138, open at one end and firmly fixed to the shaft 139 by any suitable means. In this casting is mounted a shaft 140, having thereon a sleeve 141. Attached to this sleeve and passing out through a slotin the casting is an arm 142, so bent that its outer half nearly fits upon the outer surface of the casting, while its extreme edge fits tightly upon said casting. A bent spring 143, fastened at one end to said casting, normally holds said arm against said casting, as shown in full lilies in Fig. 16.

The shaft 139 is carried ina sleeve 144, which in turn is carried in a casing made of several parts. 145 represents the part containing some of the gear wheels, Fig. 15, and is closed by a cover plate 146. The part 145 terminates in a reduced cylindrical portion 147, on which is mounted another part 148 of the casing. The part 148 consists of two cylinders placed end to end, the opposite ends being open, one open end being slipped over the part 147, and the other end being slipped over the threader cylinder 138. In the hollow part 148 is a cam surface 149. On the shaft 140 is mounted an arm 150 having a. roller 151, which travels on the inner surface of said hollow7 part, being held thereagainst by the tension of the spring 143. As the shaft 139 revolves the arm 142, once in each revolution, is 9 moved from the position shown in full lines in Fig. 16 to that shown in dotted lines, when the roller 151 comes in contact with the cam surface 149.

Fixedly mounted on the shaft 139 is a worm wheel 152 having a hub 153. This wheel meshes with a pinion 154, which is driven by the shaft 83 by the connections shown in Figs. 3 and 18. On the shaft 83 is firmly mounted a worm wheel 155, which meshes with a pinion 156, which, by means of the compound movement shown in Fig. 18, drives the pinion 152, and thereby the shaft 139, at a varying rate of speed, a quick and a slow speed in each revolution. This is accomplished by the following means: The shaft 157, carrying the pinion 156, and the shaft 158, carrying the pinion 154, are mounted in oppositely-located bearings projecting from a two-part casing 159. Bolted to the casing 159 is a bracket 160, the upper part of which is bored out, forming a bearing for the shaft 161. The shaft 157 has on its inner end a crank arm 162, in the end of which is fixed a pin 163. The corresponding end of the shaft 161 has a crank arm 164 fixed to it, the outer end of which carries a pin 165. A link 166 connects the two

pins

163 and 165. The other end of the shaft 161 is similarly connected to the shaft 158, but the crank connections are arranged 180o apart on the shaft 161. Thus the successively fast and slow movement is compounded, producing a very fast movement at one (small) part of each revolution of the threader. Of course, the threader would be inoperative, without some means for opening the eye of the needle at the proper time. This means is shown in Figs. 10 and 11. 167 represents a stout wire, bent to form a right angle, and fastened to the casing of the threader. rlhe spring 124i on the arm 119, carrying the needle 116, strikes this wire 167 at the proper time, drawing back the stop piece 118 and opening the eye of the needle, whereupon the threader on the opposite side of the machine draws the thread or band into t-he open eye, as shown in Fig. 10.

The operation is as follows: The parts being in the position shown in Fig. 1, the o erator takes a broom, and by a hand need e passes one end of the band, which has already been cutl to the proper length, through the broom near one edge thereof, and then winds the band twice around the broom, doubling the free end around inside of the two strands from above, and then brings its back over the strands and passes it again t-hrough the broom above the strands. He then places the broom handle in the space 22, with the broom between the clamps 7 and 8 in the vise. He then moves the hand lever 25 back and forth till the broom is firmly clamped, this operation automatically adjust-ing the feeding mechanism, as described. lle then moves the lever 114 from the position shown in Fig. i until it is par* allel with the lever g, which unlocks the band clutch, and by a further movement of the levers 1111 and Q, swings the vise into the space f between the pillars a and He then puts his foot on the treadle 95, thereby throwing the power on the machine. The sewing proceeds automatically, until a complete row of stitches has been made, when the operato-r removes his foot from the treadle 95, and the machine stops. The opera-ter then lifts the clamps 7 and 8, by means of the lever 49, winds a new band upon the broom as before, and the operation is repeated as often as desired. rlhen the nished article is unclamped.

While 1 have thus described my invention, l wish it to be distinctly understood that 1 do not limit myself to the exact details shown and described, as these might be Varied considerably without departing from the spirit of my invention.

I claim 1. 1n a broom sewing machine, the combination of .a support; a vise pivotally mounted on said support; a rotatable gear wheel; a band adapted to clamp the vise to said gear wheel whereby to move the vise; a screw gear meshing with said gear wheel for actuating t-he same; and means for intermittently rotating said screw gear, substantially as described.

2. 1n a broom sewing machine, the combination of a support; a vise pivot-ally mounted on said support; a clamp compris- `ing a pair of aws vertically movable within ed on said support; a clamp comprising` a pair of jaws vertically movable within said vise; a pair of arms pivotally mounted on the vise and provided with intermeshing sector gears; rods connecting said arms with the clamp jaws; means for swinging one of said arms whereby to raise and lower the jaws; and means for imparting an intermit- 'tent movement to said vise, substantially as described.

t. In a broom sewing machine, the comination of a support; a vise pivotally mounted on said support; a worm gear journaled on said support coaxial with the vise pivot; an arm connected to said vise; a lever and band carried by said arm, said band adapted to engage with said worm gear whereby to swing the vise, and said band lever adapted for manipulating the band; a shaft journaled on the support; a screw gear on said shaft meshing with said worm gear; and means for imparting intermittent rotation to said screw gear shaft, substantially as described.

5. 1n a broom sewing machine, the combination of a support; a vise pivotally mounted on said support and adapted to receive brooms of difl'erent widths; means for imparting an intermittent swinging movement to the vise comprising a rotatable shaft; a pawl and ratchet, an arm for actuating the pawl, a rod having slidable engagement with' said arm, and actuating mechanism for moving the rod; a slidable sleeve; connections between the sleeve and the vise for sliding the sleeve in accordance with the thickness of broom inserted in the vise; a shaft journaled on the support; an arm mounted on the shaft and engaging with said sleeve; a second arm mounted on the shaft; and a link connected to said second arm; said link having connection with the rod slidable on the pawl actuating arm whereby to control the operation of the pawl to determine the rate of swinging movement of the vise, substantially as described.

G. 1n a broom sewing machine, the combination of a support; a vise pivotally mounted on said support comprising a pair of jaws; mechanism for feeding said vise step by step during the sewing operation; and means for controlling said feeding mechanism comprising a member having inclined faces and mova'ble between the jaws of the vise, connect-ions between said movable member and the vise feeding mechanism; and members carried by the vise jaws adapted to engage with the respective inclined faces of said member and position the same for the purpose set forth.

7. In a broom sewing machine, the combination of a support; a vise pivotally mounted on said support comprising a pair of jaws; mechanism for feeding said vise step by step during the sewing operation; and means for controlling said feeding mechanism comprising a member having a pointed end and slidably mounted between the jaws of the vise, a pivoted bell crank lever having one arm thereof connected with said slidable member, connections between the other arm of said lever and the vise feeding mechanism; and rollers carried by the vise jaws adapted to engage with the pointed end of said slidable member and position the. same for the purpose set forth.

8. ln a broom sewing machine, the combination of a supporting` frame, a broom holdingvise pivotally supported thereby, and means for feeding said vise step by step during the sewing` operation, said means including a main operating shaft, a secondary operating shaft provided with a ratchet wheel affixed thereto, a pawl for said ratchet wheel; an arm carrying said pawl and loosely mounted on said secondary shaft, and adjustable connect-ions between said shafts including a bell-crank lever, a link carried by one end of said lever, one end of said link being connected with the arm on said secondary shaft, substantially as described.

9. In a broom sewing machine, the combination of a supporting frame, a broom holding vise pivotally supported thereon, and means for feeding said vise step by step during the sewing operation, said means including a main shaft provided with a cam, a bell-crank lever driven by said cam, a link carried by said lever, an arm loosely engaging one end of said link, a secondary shaft on which said arm is mounted, a ratchet wheel fastened to said secondary shaft, a pawl for said ratchet, and a spring for holdinO said link as close to said ratchet wheel as possible, substantially as described.

10. In a broom sewing machine, the combination of a main frame, pivotal supports thereon, a broom holding vise mounted on said supports, means for feeding said vise step by step. during the sewing operation, said means including a worm wheel fixed on one of said pivotal supports, a main operating shaft, connections between said worm wheel and said shaft, and a clutch for clamping or unclamping said vise to a part of said worm wheel, so that said vise may be either moved by the movement of said worm wheel or independently thereof, substantially as described.

ll. in a broom sewing machine, the combination of a main frame, pivotal. supports thereon, a broom holding vise including two opposed jaws pivotally mounted on said supports, means for feeding said vise step by step during' the sewing operation, said means including a casting provided with worm teeth and a friction surface, and said casting being attached to one of said pivotal supports, and means for clamping and unclamping the vise to said frictional surface, whereby said vise is regularly fed during the sewing operation and may be unclamped and swung independently of Said worm wheel at the beginning or end of the sewing operation, substantially as described.

l2. In a broom sewing machine, the combination of a main frame, pivotal supports thereon, a vise carried by said pivotal supports, n eans for feeding said vise step by step during the sewing operation, said means including a worm wheel fixed to one of said supports, and having a frictional surface thereon, a band encircling said frictional surface, means for tightening and loosening said band upon said surface and securing it fast upon said surface, and a hand lever for swinging said vise when unclamped from said frictional surface, substantially as described.

13. In a broom sewing machine, the combination of a main frame, pivotal supports thereon, a vise journaled on said supports, a worm wheel on one of said supports for driving said vise, and provided with a frictional surface, a band encircling said surface and having one end fixed to a hand lever for operating said vise mounted on one of said supports, a bell-crank lever pivoted on said hand lever, and a swinging lever provided with a stop mounted on said' hand lever, whereby by movingsaid swinging lever said band may be brought. tightly into contact with said frictional surface, thereby clamping the vise and operating worm wheel together, so that the movement of the latter will move the former, during the sewing operation, substantially as described.

14. ln a broom sewing machine, the combination of a main frame, shafts carried 'hereby forming pivotal supports, a bracket attached to said supports, a vise provided withAoppositely-arranged jaws supported by said pivotal supports, means for bringing the jaws of said vise toward each other to clamp a broom, means for feeding said vise step by step during the sewing operation,

and means for automatically varying the' movement of said feeding mechanism, said means including a pair of rollers, one carried by each of the jaws of the vise, a member sliding in said bracket and adapted to contact with said rollers, and connections between said member' and the feeding devices, whereby the movement of said member adjusts said feeding devices, substantially as described.

15. In a broom sewing' machine, the combination of a supporting' frame, shafts mounted thereon forming pivotal supports, a bracket secured to said pivotal supports, a vise composed of two oppositely-arranged jaws each having two downwardly-extending arms which cross each other', and are supported by said pivotal supports, means for feeding said vise step by step during the sewing operation, and devices for clamping` and unclamping' said vise to and from said feeding' means, substantially as described.

16. ln a broom sewing machine, the combination of a main frame, shafts forming pivotal supports carried by said frame, a bracket secured to said shafts between their pivotally-placed ends, a vise comprising two oppositely-arranged jaws supported by said supports, feeding' mechanism for said vise, and means for automatically adjusting said feeding mechanism according to the size of the broom in the vise, said means including` a pair of rollers one mounted on each of the jaws of the vise, a spear head with which said rollers contact, a. bell-crank lever pivotally mounted on said bracket, a link connected to said bell-crank lever, a sliding member mounted on one of said supports, a pivoted lever one end of which engages said sliding member, a bar engaging the other en d of said sliding member, an operating shaft for the feeding means, au arm mounted on said shaft, and a sliding bracket on said arm to which said last-named rod is connected, substantially as described.

17. In a broom sewing machine, the combination of a main frame, a vise carried thereby including two oppositelyarranged jaws, a sliding clamp mounted in each jaw, and devices swinging with said vise for raising and lowering' said clamps simultaneously, including an operating handle, curved gears meshing' with each other, and rods running from parts secured to said gears to said clamps, substantially as described.

18. In a broom sewing machine, the combination of a main frame, a vise pivotally supported thereby comprising two oppositely-arrang'ed jaws, a clamp adapted to slide up and down in each jaw, a pair of rods connected to each jaw, pivoted frames to which the lower ends of said rods are connected, each frame having' a circular shaped gear, said gears meshing' with each other, and an operating handle secured to one of said frames, substantially as described.

19. In a broom sewing machine, the combination of a main frame, a vise pivo-tally supported thereby, said vise comprising' two oppositely-arranged jaws, each provided with a guide in its interior, two clamps, one mounted in each jaw, and adapted to slide up and down between said guides and the jaws, means for moving' said jaws up and down, comprising' a pair of rods pivotallv connected to each clamp, frames to which the lower ends of each of said pair of rods is pive-tally connected, a pair of intermcshing circular shaped gears one on each of said frames, an operating' handle secured to one of said frames, and a notched bar holding' said handle in one of several possible adjusted positions, substantially as decribed.

20. ln a broom sewing machine, the combination of a main frame, sewing` mechanism comprising' vibrating' needles, a vise pivotally supported by said frame, said vise including' two oppositely-arranged jaws each with a pair of supporting' arms, which pairs cross each other and are pivotally mounted, the parts being' so arranged that, when a needle has made its forward stroke the pivotal point of support of said needle, the top of one of said jaws and the pivotal point of its supporting' arm are in t-he same straight line, substantially as described.

2l. ln a broom sewing machine, a rotary threader therefor, comprising a rota-ry hollow cylinder and means for driving' it, an arm projecting' out through the surface of said cylinder, a spring' for holding' said arm normally against the outer surface of said cylinder, and means for lifting said arm against the tension of said spring once during each revolution of the threader, comprising a cam and an operating' arm connected to said first-named arm, substantially as described.

22. ln a broom sewing machine, a rotary threader therefor, comprising' a support-ing bracket, one end of which is hollowed out and provided with a cam, a shaft mounted in said bracket, a hollow cylinder, one end of which is secured to said shaft, an arm projecting' outwardly through a slot in said cylinder, a spring' holding' said arm ynormally in contact with the outer surface of said cylinder, and means for lifting' said arm against the tension of said spring' once during' each .revolution of said cylinder, said means including a crank arm operatively connected to said first-named arm, said crank arm being provided with a roller adapted to engage with said cam, substantially as described.

23. In a broom sewing' machine, the combination of a threader, a shaft carrying' said threader, a second shaft driving' said firstnamed shaft, a third shaft driving said second shaft, and connections between said second and third shafts for driving the threader shaft with a quick and a slow movement during each revolution, said connections including' a crank arm fixed to said second and third-named shafts, each 0f said crank arms being provided with a pin, and a link connected to said pins, substantially as described.

24. In a broom sewing machine, the combination of means for holding the broom; means for drawingthe thread or band through the broom comprising reciprocating needles; a rotary unthreader for unthreading each needle at the end of its stroke; and a rotary threader for threading' each needle at the beginning of its stroke; said threader comprising a sleeve having a pivotally mounted arm projecting theret-hrough, means for moving said arm; and said unthreader comprising an arm, and a spool mounted on the end thereof, said spool having an enlarged outer end portion, substantially as described.

25. In a broom sewing machine, the combination of a main frame; sewing mechanism comprising needles carried by said frame; means for reciprocating said needles; a rotary threader adapted to draw the thread or band into the eye of each of said needles at the beginning of the stroke, said threaders comprising each a cylinder having a pivotally mounted arm projecting therethrough; and means for moving said arm, substantially as described.

26. In a broom sewing machine, the combination of a main frame; means supported thereon for holding a broom; sewing mechanism therefor comprising a pair of reciprocating needles disposed on opposite sides of said frame; a rotary unthreader for each needle adapted to unthread the needle near the end of each stroke; and a rotary threader for each needle adapted to thread said needle near the beginning of each stroke; said threaders comprising each a cylinder, an arm pivotally mounted on said cylinder and projecting therethrough, said arm having a portion thereof adapted to lie against the outer surface of the cylinder, and a cam element adapted to engage with and actuate said arm; and said unthreaders comprising each an arm and a spool mounted on the end thereof, substantially as described.

27. In a broom sewing machine, the combination of a main frame; means for clamping a broom therein; sewing mechanism comprising reciprocating needles adapted to draw the thread or band through the broom; and a rotary unthreader adapted to disengage the thread or band from each needle at about the end of its stroke, said unthreaders comprising each an arm, and a spool mounted on the end thereof, said spool having an enlarged end portion, substantially as described.

28. In a broom sewing machine, the combination of a main frame; a broom holding vise carried thereby; means for feeding said vise step by step during the sewing operation; sewing mechanism comprising a pair of reciprocating needles adapted to draw the thread or band through the broom, each of said needles having an eye; a member movable within and lengthwise of the needle and adapted to normally vclose said eye; a stop for each needle mounted on said frame and adapted to move said member and open the eye of the needle; a rotary threader and unthreader for each needle adapted to unthread the needle near the end of each stroke, and to thread each needle near the beginning of each stroke, said threaders comprising each a cylinder, an arm pivotally mounted on said cylinder and projecting therethrough, said arm having a portion thereof adapted to lie against the outer surface of the cylinder, and a cam element adapted to engage with and actuate said arm; and said unthreaders comprising each an arm and a spool mounted on the end thereof, substantially as described.

In testimony whereof, I aiiiX my signature, in presence of two witnesses.

. ANDREW E. MILLER.

IVitnesses J. S. GIUSTA, GEO. B. IIT'rs.

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