US2008116A - Sewing machine - Google Patents

Description

July 16, 1935. 'R. B. THOMPSON SEWING MACHINE Fild Jan. 7, 1930 4 Sheets-Sheet 1 July 16, 1935. R. B. THOMPSON SEWING MACHINE Filed Jan. 7, 1950 4 Sheets-Sheet 2 (Ittorhegi'.

July 16, 1935.

R. B. THOMPSON SEWING MACHINE Filed Jan. 7, 1.930

4 Sheets-Sheet July 1 6, 1935. R. B. THOMPSON SEWING MACHINE Filed Jan.-'7, 1930 4 Sheets-Sheet Patented July 16, 1935 UNITED STATES.

SEWING MACHINE Reuben B. Thompson, Stillwater, N. Y., assignor to Willcox & Gibbs Sewing Machine Co., New York, N. Y., a corporation of New York Application January 7, 1930, Serial 'No. 413,065

12 Claims. (01. 112-132) This invention relates to a combined sewing machine and rufiier mechanism, the latter forming a part of the sewing machine itself but being so combined therewith that it can be instantly put into or out of action at the will of the operator while the sewing machine is in operation, and regardless of the speed at which it is running.

The work for which principally the machine hereinafter described has been designed is the forming of gathers or ruflies in the upper edge of the back of shirts for men and boys in process of stitching said back between the two plies of the double yoke; but the machine is useful also for other kinds of work in which intermittent or continuous ruffling is required.

An object of the invention is to combine a ruffiing mechanism with a standard sewing machine of suitable type without making substantial changes of construction therein; or in other words, to provide a combined sewing machine and ruflling mechanism wherein the organization of the former remains substantially unchanged.

Another object of the invention is to provide a ruflling equipment so designed that, in order to requires but few changes, and such as are but slight in extent and easily made.

A further object of the invention is to provide a sewing machine having an intermittent ruflling pact, comprising relatively few parts and hence relatively low in cost of construction and of up keep.

A further object of the present invention is to take the power for operating the ruffling mechanism from a driving shaft on the overhanging arm of the machine above the bed plate, the connection with said shaft being preferably at a point at, or in proximity to, the head of the machine, thus making possible a very compact arrangement of the ruiil-er actuating mechanism and its driving connections, all the elements whereof may be located in close proximity to the said arm and to the head of the machine, well above and clear of the work plate.

further object is the provision of means for throwing the rufiler into and out of action which combine it with the sewing machine, the latter" equipment that is simple in construction, com- 'Another object in view is the production of a much greater output than attainable with combined sewing andrufiling machines now in use, i and at a substantially lower cost of maintenance.

Other object's'of the invention will be indicated 5 in the following detailed description of a machine constructed in accordance therewith, reference being made to the accompanyingdrawings which form apart of this specification, and wherein one embodiment'of the invention is illustrated as applied to, or combined with, the well-known commercial Willcox & Gibbs high speed lockstitch power-driven sewing machine; 'but it will be understood that the improvementsconstituting the present invention, though specially applicable to 15 lock-stitch machinesfmay also be used to advantage in connection-with other types of sewing machines" 1 i Fig. 1 is an elevation, partly in section, of the rear'side of the machine (that away from the operator);

Fig; id is a viewsimilar to Fig. '1, being a completion thereof, showing parts at the left end of the machine not shownin Fig. 1;

Fig. 2 is a top plan view, some of the parts at the head-of the machine beingomitted Fig. 3 isa partialfront elevation, some of the parts of'the headof'the machine being omitted;

Fig.4 is an end elevation looking at the head of themachin'e';

Figs. 5, 6 and? are vertical'sections on lines 5-5, 6-6, of Fig. 1, respectively, some of the parts through which said section lines pass being omitted; i v i 35 Fig. 8 is a horizontal section on line 8-8 of Fiat;

i Fig. 9' is a Fig. 3;- c

Fig. 10' is a view in elevation and section of the rufiler bracket;

Fig. 11 is a vertical cross section o'n'line "II-ll of Fig. 10; i

Fig. 12 is'a detail in elevation and vertical section showing the ruffier driving connections in their normal positions of rest; 7

Fig. '13 is a detail in perspective of parts of the rufiler driving connections; and r Fig. 14 is a perspective view of other parts thereof detached from one another.

The mainframe of the lockstitch machine shown in the drawings comprises the usual hollow standard I5; the-hollow arm or gooseneck l6 through which extends themain shaft I1; and the head I 8, which contains the needle-bar crank horizontal section on line 99 of of the same i9 and other parts of the stitch-forming mechanism.

The ruiller, its supporting means and also the means for lowering and lifting it into and out of position for engaging the work will now be described, reference being had specially to Figs. 3, (l and 9.

The ruflier blade 20, which is or may be of ordinary construction, is carried by a plate 2|, herein called the ruflier-foot. Said ruffler-foot is pivotally supported by a narrow bar 22, herein called the miller bar, said ruffler bar being rigidly attached at its upper end to a hub 23 fixed by a set screw 230 upon a horizontal tubular shaft 2 1 having bearings in a sleeve 25 on the lower part of bracket 35, the latter being attached to the back part of the head l8 of the main frame. The lower end of rufiler bar 22 occupies a space formed between a lug 21 projecting'upwardly.

from rufiler-foot 2i and an arm 28, also integral with said foot, said parts .21, 22, 28, beingall perforated for the passage of pivot screw 26, the perforation in arm 22. being of such size that the shank of screw 26 passes freelythrough it.

Arm 28 also forms one member ofatoggledever,

whereof the other member, arm 29, is pivoted at its upper end to bar 22 by-pivot stud 3|, and at its lower end has a pin 36' which engages a notch or slot in the upper end of arm 28 (Fig. 4) thus forming a pin-and-slot toggle joint; Toggle lever 28, 23 is the miller lifting lever, its main function being to tilt the serrated edge of blade upward, out of contact with. the work, when the rufiier mechanism is thrown out. of action, and con versely to depress the serrated edge of blade 20 into; engagement with the work when themufiier mechanism is thrown into action. These operations of the ruffler lifting lever are performed automatically at the proper times, through connec- .tions hereinafter described.

Tubular shaft 24 is the rufl'ler actuating shaft, and in action it has an oscillatory motion ashereinafter described. It is formed with a collar 24!) which bears against the end of sleeve 25,.the 'idiameterof said collar being such that itscircurnference is flush with the outer surface" of said sleeve. 23 is fitted, its outer surface being also flush with that of the collar 240. closes a bolt 32, which is capable of a limited lengthwise movement for the purpose. of actuating toggle- lever 28, 29 as presently described.

A spring 39 acts, when free to exertits pressure, to hold ruffler blade 20 in engagement with the work (full line position,Fig. 4). This spring may be variously formed. As shown :it is of resilient wire, and is attached at one end to screw 26 having several coils Wound around the shank thereof, the other end of said spring being .bent around the inner edge of bar- 22. Thus spring 29 so exerts its pressure as to keep the toggle lever straightened out, and the serrated edge of blade 2!! in contact with the work. It follows th at the rufller blade and foot are held while in operation with. yielding pressure. From the foregoing description it will be understood. that the rufller blade and its support are supported from the oscillatory tubular shaft 24 and when in action are swung back and forth in the are of a circle whose center is the axis of said shaft. Heretofore in ruffling machines in use, the rufiler blade and its support have been reciprocated back and forth, as by means of a horizontal s1iding bar. The above described construction, "whereof a distinguishing feature is the radial or On the other side of said collar, hub 1 Said tubular shaft en- 7 arcuate movement of the miller blade and its support, effects a material simplification of parts, especially in respect to the support and its actuating devices, and the means for lowering and. lifting the blade into and out of contact with the Work. It will be observed that, while the ruffler foot and blade move back and forthin the arc of a circle, yet by reason of the pivotal connection of said foot with rufiler bar 22, and the action of toggle lever 28, 29 and spring 39, the serrated edge of the ruifler blade travels back and forth in a horizontal path, in contact with the work as it lies on the work plate.

Toggle lever 28, 29 is actuated to lift the rufiler blade out of engagement with the work by the lengthwise movement of bolt 32 within the tubular shaft 24. When bolt 32 is in the position shown in Fig. 9, which is its normal position, that is, the position it occupies when the ruffling mechanism is not in action, its conical end 33 protrudes beyond the end of shaft 24 and presses against the beveled edge of arm 29, turning said arm on its pivot in such direction as to bend the toggle lever at its elbow 30, thus tilting the rufiler blade upwards at its serrated end. This is the dotted line position of the parts in Fig. i.

Bolt 32 is moved positively in this direction (to the left in Fig. 9) by means of an arm 34 attached to cross shaft 88 (Figs. 6, 10, ll) hereafter de- 7 moved to the right, which occurs whenever the operator throws the ruffling mechanism into action, the conical end 33 of bolt 32 is withdrawn from engagement with lever arm 23 to the positionshown in Fig. 3; this being effected by the action of a helical spring 38 which encircles the other end of the shank of said bolt. Arm 29 of the toggle lever being thus released from the pressure of theconical head 33of bolt 32, said lever is bent by the influence of spring 39, thereby tilting-ruffler blade foot 2! downward and bringing the serrated edge of blade into position for engagement with the work.

The means for imparting ruffling movements to: the rufiler while in action will now be described.

an eccentric strap 46 encircling the same (Figs.

3, 4 and 5) The WillcoX & Gibbs high speed lockstitch machine has the main driving shaft in the arm and head thereof, and has on. said shaft an eccentric which serves a purpose not needed in a combined sewing and ruliiing machine; said eccentric being adjacent to the needle-bar crank l9 before mentioned. 'By substituting therefor the eccentric 45 with different timing, power is obtained for driving the ruifier mechanism without substantial change in the organization of the machine. The eccentric strap 26 is connected through the intermediary of a pitman 41 and crank arm 48, with a rock-shaft as, which has bearings in a tubular part 5! of the vruilier bracket 35 (Figs. 1, 2, 11 and 12). The connection is made by means of a hub 49 formed on one end of and integral with arm 48. Said hub 49 is fitted on one end of shaft 50, and is secured in place thereon by means of set-screw 52.

To the other end of rock-shaft 5t! is attached a curved crank arm 55, herein called the segment (Figs. 1, 5, 6 and 12), its shape being conformed to the arc of a circle. The attachment of segparatively little ment 55 to rock-shaft 50 is effected by means of a hub 55 (Fig. 1) integral with said segment; said hub 56 being mounted upon rock-shaft 50 and secured thereto by two set-screws 57. By means of eccentric 45, pitman 41, arm 48 and rock-shaft 50 the segment 55 is oscillated continuously so.

tachedto a crank arm63 (Figs. 2, 3, 4, 5, 6 and 12) secured to the tubular rock-shaft 24, by which the miller blade is actuated. Block 6| (Fig. 13) is curved to conform to the shape of slot 53 and is pivotally connected to link 62 by screw stud 64. i By means of said link 62 motion is communicated from segment 55 to the tubular. ruflleractuating shaft 24, when the ruflling mechanism is in action. Normally, however, that is to say, while the'rufliing mechanism is not in action, block i occupies such a position in the lower end of slot 58 that the axis of pivot stud 64 is coincident with that of rockeshaft 50, in which position it is shown in Fig. 12. Therefore, while the parts. are in this position the oscillations of rock-shaft 55 and segment 55 communicate no motion to link 62, and the rufiier actuating mechanism remains quiescent. But as soon as block 6! moves off and away from the center of oscil lation of shaft 55, link 62 begins to reciprocate, and motionis thereby imparted to shaft 24. The parts are shown inthis operative position in Figs. 1, 4, 5 and 6. It is obvious that the further block 6! is moved in slot 58 of segment 55 away from the axis of rock-shaft 50, the greater will be the arc of oscillation of shaft24, and the longer the throw or ruffling movement of the ruliler blade 28.

It is a feature of the invention that block 5| is always in engagement with slot 58, so that, in putting the rufiier into and out of operation, the action is not like that of a clutch, in which there is an engagement and a complete disen-.

gagement of parts. The mechanical connection between the parts 55 and 62 is always complete. What changeswhen the control mechanism is operated is merely the point of connection between those parts.

It is also a feature of the invention that the power for actuating the rufller is taken from a point near where the latter is located, which is near the head of the machine, instead of from a point near the other end of themachine, as heretofore. Therebyia substantial gain in compactness is effected; with a cohsequentsaving in the size, weight and cost of the connecting. ele- There is also aresulting gainin cermerits; taintyand ease of operation and in facility of manipulation on the part of the operator.

As will be seen, by reference specially to Figs. 2 and 3, the operation of the miller blade by power taken from the through short and light, and which therefore add comto the cost, weight and complication of the machine as a whole. The direction of the driving connections is first downwardly from the main shaft by a short pitman 4,1; thence rearwardly to the back of the machine by a short arm 48; thence along the back of the mamain shaft is effected driving connections that are relatively chine towards standard [5 by a rock-shaft 50, which need be only a little longer than necessary to clear the head l8 of the machine; thence forward across the machine and under the arm Hi to the front of the machine by link 62; and thence by tubular shaft 24 to the ruffler supportingarm 22. Looked at from above (Fig;"2) the entire system of driving. connections presents approximately'the outline of a rectangular figure of small dimensions.

Further it will'be seen that the means (hereinafter described), whereby the rufiler mechanism is put into and out of action at the will of the operator, are located at the rear of the arm of the machine near the head thereof, and that the connections for operating said controlling means are all on the side of the machine away from the position of the operator.

The means, under control of the operator of the machine, for putting the ruffier into and out of action will now be described. The movement of controlling block 6| in the curved slot 58 of oscillating segment 55, whereby the rufiler is put into or out of action at the will of the operator, is effected through the intermediary of a slide 10, movable vertically between ways formed by the vertical' away in Fig. 1), a top piece H2, and an oil-drip plan 1 l4.

From top piece 'HZtwo stems 94 (Figs. 1 and 7) extend downwardly within the housing, each stem having a screw-threaded upper end which is tapped into said top piece. Each stem 94 is encircled by a strong helical spring 93 and each stem with its spring extends into a socket formed in slide 10. Each spring bears at its upper end against said top piece. H2 and at its lower end against the bottom of its socket.

Housing H has an opening in the side wall thereof adjacent to the head of the machine (Fig. 1) through which opening extends a member 12 which is attached to slide 10 by screws 16, 16. Said part 12 is shown in perspective, its several parts detached from each other, in Fig. l4. Between ledge 11 and bottom plate 18 of said slide member 12 is a guide-way wherein is positioned the rounded end of link 62 (Figs. 1, 5, 6 and 12). Consequently when slide 10 with its member 12 is moved in either direction the end of link 62 moves with "it, thus moving block 6| in slot 58 of segment 55. When slide 10 is in its lowermost position, it being then held by the pressure of springs 93 against stop-pin 13 (as shown in Fig. 7) the end of link 62 is in line with the axis of rock-shaft 55 and the ruiiier actuating shaft 24 is consequently motionless. When, however, slide 70 is moved upwardly, compressing springs. 93, block 6 I and with .it the pivot studs 64 are moved 1 off and away from the axis of rock-shaft 50, and

the ruffier mechanism is put into operation.

The upward movement of slide 10, carrying with it the free end of link 62, also releases arm 82 of a. short horizontal shaft 85 from the downward pressure of saidlink G2. Said shaft 80 also carries the downwardly projecting arm 34, which, as already described, bears against pin 36 of bolt 32, keeping the latter normally in the position shown in Fig. 9, to lift the rufiler blade .2!) out of engagement with the work to the position in which it is shown in dotted lines in Fig. 4. But when mechanical connection between the slide housing I l,

of the rufr'ler blade, as

i the .presser-bar .919 (shown in Iin Fig. 4. Springs 38 and 39 are normally under compression and ready to act as soon as they are released from the pressure of the stronger springs 93.

Thus the upward movement of slide 10 effects two results, one by positive action, the other automatically. First, it brings about, by shifting the position of block ii in slot 53, an active relationship between the driving shaft 21 of the sewing machine and the ruffler-actuating shaft 24, the those parts being always complete; and secondly, it effects automatically, through the action of springs 38 and 39, the depression of the serrated end of the miller blade into contact with the work.

The connections for moving slide 19 upwardly at the will of the operator in order to throw the ruflier into action are illustrated in Figs. 1, 2 and 7. As there shown, a bell-crank lever 85 is pivoted at 86 to a' lug 15 (Fig. 2) on the side of one of the arms'of said lever being pivotally connected to slide 19 near the lower end thereof by means of a link 87. Said link 31 connects pivotally, by means of screw stud 89 (Figs. 1, 7 and 8) with slide 19. Screw stud 89 passes through a slot in cover plate '1 ID. The other arm of bell-crank 85 is connected by a link 88 with one arm of a second bell-crank so, pivoted at 91 to standard 65; and to the other arm of lever 90 is attached a rod 92 (Fig. 1d) leading toa suitable actuating device, such as a treadle or a knee-piece,not shown. In Fig. 1, the bellcranks 35 and 9i] and connected parts (including slide 19) are shown in full lines in the positions they occupy when the ruffler is in action, and in dotted lines in the positions they occupy when the ruffler is out of action, at which time slide IE3 is in contact with stop-pin 13.

When slide '59 is moved upwardly by the means just described, or by other suitable means, it compresses springs 93, so that said springs, when free to act, move slide 10 downward to the position shown in Fig. Lin which position of the parts, the axis of the pivot stud E4 on slide block 6 l is in line with that of shaft 59, the rufiler mech 'anism is stationary. and the ruffier blade is tilted upwardly out of contact with the work, as already explained.

For the purpose of adjusting the throw of the ruiiler blade, so as to produce ruffles of different widths, an adjustable stop screw 95 is provided (Figs. 1, 3 and '7). I Said screw 95 has a milled head, and its screw-threaded shank passes through and engages a i ll! of the slide housing 1 i a milled edge lock nut 96, also in engagement with stop--scew 95, being provided for holding said stop screw in its adjusted position. The position of stop-screw 95 determines the limit of the upward movement of slide it; and this in turn determines the throw already explained. Thus, to formwider rulfles stop-screw 95 is adjusted upwardly, and to form narrower ruflies it is adjusted downwardly.

The treadle operated connections for lifting threaded hole in top piece Fig. 1) are of the located on and supported from the head and overhanging arm of the frame of the sewing machine, said'means beginning with the main shaft and the eccentric ,45 thereon and terminating at the rear side of said head and arm of the frame in the segment 55 which is oscillated continuously so long as the machine is in operation;

(1)) Driving connections from said driving means to the rufiler blade 20, said connections being mounted on-and supported from the head and overhanging arm of the frame and beginning with the block El slidable in slot 58 of the segment 55, and extending from said block at the rear side of the machine beneath the overhanging arm of the frame to and along the front of the machine at the head thereof and thence depending to and terminating with the rufller-foot 2i and the rufiler blade attached thereto.

(c) Means'under control of the machine operator for shifting the point of connection between said driving means and driving connections, that is, shifting said slide block 6| in the slot of segment 55 from a position in which no movement is imparted to the driving connections to a position for imparting movement thereto and vice versa, said control means beginning with a suitable knee-piece or treadle (not shown) and terminating in the slide 19 and parts thereon which constitute a guide-way engaged by the rounded and of the link 62. Except for the connections to the knee device, the parts constitutsuch control means are supported from the overhanging arm of the machine at the rear side thereof.

((1) Means associated with said driving connections for automatically moving the ruiiler blade into or out of operative position for engagement with the work according to whether the driving connections are, or are not, being actuated from the driving means.

It will be understood that the mechanism hereinbefore described and illustrated in the drawings is merely one form in which the invention may be embodied, and is not to be taken as limiting the scope of the invention as defined in the appended claims.

What is claimed as. new is:

1. The combination with a sewing machine having an overhanging arm and a sewing head at'the end thereof, of a driving shaft journaled on-said arm; ruffiing mechanism; actuating connections thereto from said shaft all mounted on said headand arm and including a rock-shaft journaled on said head and located at the back of the machine, means located at said head of the machine for driving said rock-shaft from said driving'shaft, and other means actuated by said rock-shaft and extending beneath said overhanging arm from the back to the front of the machine; and means under control of the operator for-throwing said ruffling mechanism into and out of operation.

2. The combination with a sewing machine having a standard, a hollow arm connected at one end with said standard and at the other with the head of the machine, and having a shaft extending through said arm, of a rufiling device; actuating mechanism therefor; driving connections receiving power from said shaft at said head of the machine; and means for throwing said driving connections into and out of operative relation with said actuating mechanism, said means comprising an oscillating segment located at the back side of the machine near the head thereof and a link extending beneath said arm connected at one end with said rufiier-actuating mechanism and having at its other end a pin-and-slot connection with said segment.

3. In a combined sewing and ruffling machine, the combination with the arm and head and with a driving shaft extending along the former and into the latter, of an oscillating segment driven from said shaft; a miller blade; a rock shaft by which said blade is carried; a connecting link attached at one end to an arm of said rock shaft and at the other adjustably engaged with said segment; and means operable by the operator during the running of the machine for moving the free end of said link relatively to the axis of said segment.

4. The combination with the driving shaft of a sewing machine, of an oscillating member receiving motion therefrom; rufliing mechanism including an actuating shaft; a link attached at one end to an arm on said actuating shaft and at its other end being in adjustable engagement with said oscillating member, the point of engagement being substantially in line with the axis of oscillation thereof when the ruifling mechanism is not in action; and means under the control of the operator for moving the free end of said link away from the axis of oscillation thereby to put said ruffling mechanism into action.

5. The combination with a sewing machine; a ruiiiing device and connections for actuating the ruifiing device from a driving shaft of the sewing machine; of means for throwing said ruffiing device into and out of action, said means comprising a slide mounted in a fixed guideway on the frame of said machine and movable to different positions to correspondingly vary the movement of the rufliing device; means under control of the operator for moving said slide while the machine is in operation in the direction to throw the rufiiing device into action; and a spring for returning said slide to its normal position.

6. The combination with a sewing machine, of a ruflling device comprising a ruilier blade and a pivoted support therefor; driving connections for operating said rufiiing device from a shaft of said sewing machine; means under control of the operator for throwing the ruffiing device into and out of action, said means comprising a slide mounted in ways of the sewing machine frame; and connections for tilting said ruflier blade support downward when the rufiier is thrown into action and upward when it is thrown out of action, said last named connections being also actuated by said slide.

7. The combination with a sewing machine having an overhanging arm, a sewing head at the end of said arm and a driving shaft on said arm and head, of ruffling mechanism and driving connections therefor all mounted on said arm and head and including a rock-shaft located at the rear of the machine, means for driving said rock-shaft from said driving shaft, and other means actuated by said rock shaft and extending across said arm from the rear to the front of the machine. 7

8. The combination with a sewing machine having an overhanging arm, a sewing head at the end of said arm and a driving shaft journaled thereon, of rufiler mechanism comprising a rufiier actuating shaft and driving connections therefor all mounted on said arm, said connections comprising actuated members extending and trans mitting power from said driving shaft along the rear side of. said head to said rufiier actuating shaft.

9. The combination with a sewing machine and its driving shaft, of ruffling mechanism comprising a tubular actuating shaft; an arm attached thereto; a rufiler blade pivotally attached to said arm; a lifting lever for turning said blade on its pivot; a spring for holding said blade yieldingly in contact with the work while the ruffler is in action; means .under the control of the operator for putting said tubular shaft into and out of operative relation with said driving shaft; a bolt movable within said tubular shaft; and connections for actuating said bolt when the ruffler is put out of action to tilt said blade out of con tact with the work.

10. The combination with a sewing'machine and its driving shaft, of rufliing mechanism comprising a tubular actuating shaft; a rufiied blade pivotally attached to an arm fixed to said shaft; a lifting lever for turning said blade on its pivot to an operative and an inoperative position in respect to the work; a bolt movable lengthwise within said tubular shaft for operating said lever to tilt it out of operative position; a spring for returning said lever to operative position when released by said bolt; and means under the control of the operator for putting said actuating shaft into and out of. operative relations with said driving shaft and for simultaneously moving said bolt in one direction or the other.

11. The combination with a sewing machine having an overhanging arm, a. sewing head at the end thereof and a driving shaft journaled on said arm, of rufiiing mechanism; driving connections therefor all mounted on said overhanging arm and actuated from said driving shaft and including a rock-shaft located at the back of the machine, means located at the head of the machine for driving said rock-shaft from the driving shaft, and other means actuated by said rock-shaft and extending beneath said overhanging arm from the back to the front of. the machine; and means adapted to be actuated by the operator while the machine is in operation for throwing said rufiling mechanism into and out of operation.

12. The combination with a sewing machine including its driving shaft, of ruiiling mechanism comprising an oscillatory shaft located at the front of the machine, an arm attached to said shaft, a rufiier blade attached to the free end of said arm, and driving connections comprising actuated members extending and transmitting power from said driving shaft along the rear side of the machine to said oscillatory shaft whereby said blade is swung back and forth in the arc of a circle.

REUBEN B. THOMPSON.

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