US967470A

US967470A - Variable-speed driving mechanism.

Info

Publication number: US967470A
Application number: US52212809A
Authority: US
Inventors: Joseph J Walser
Original assignee: Goss Printing Press Co Ltd USA
Current assignee: Goss Printing Press Co Ltd USA
Priority date: 1909-10-11
Filing date: 1909-10-11
Publication date: 1910-08-16
Anticipated expiration: 1927-08-16

Description

y J. J. WALSER. VARIABLE SPEED DRIVING MECHANISM.

. APPLICATION IIIIED OUT. 11, 1909. 967,470, Patented Aug. 16, 1910.

4 SHEETS-SHEET l.

J. J. WALSER. VARIABLE SPEED DRIVING MEGHANISM.

APPLICATION FILED OUT. 11, 1909.

Patented Aug. 16, 1910.

4 SHEETSSIIBET 2.

J. J. WALSER. VARIABLE SPEED DRIVING MEGHANISM. APPLICATION FILED our. 11, 1909'.

@WAVQ, Patented Aug. 16,1910.

4 SHEETS-SHEET 3.

J. J. WALSER.

VARIABLE SPEED DRIVING MECHANISM.

Patented Aug. 16, 1910.

4 SHEETS-SHEET 4.

APPLICATION FILED 00T.11, 1909.

srnr

nN'r OFFICE.

, aosnrn a. watsnn, or crrrenco, ILLINOIS, .assrslvon TO THE sass PRINTING rnnss oonrannor ci-rroneo, rLLInoIs, A GORPORATIQN or ILLINOIS.

To all whom it may concern."

VARIABLE-SPEED DRIVING MECHANISM.

scram.

' Be it known that I, Josnrn J. WALSER, a citizen of the United States, residing at Chicago, in the county of. Cook and State of Illinois, have invented certain new and useful Improvements in Variable-Speed Driving Mechanism, of which the following is a specification, reference being had to the accompanying drawings. y a

My invention relates to variable speed driving mechanism adapted to be driven by an electric motor, and it is particularly adapted to variable speed driving mechanism for printing .presses, by means ,of which the press may be driven at a slow speed and at a higher speed and by means of which the speed of the press may be changed while the press is running from slow speed to high speed.

More particularly, my invention relates to improvements in variable speed driving mechanism of the general character shown in application for Letters Patent of the United States to me, Serial Nd .t 6,-121, filed December 5, 1908. In these'mechanisms referred to, speaking generally, the main driving shaft by which the press or other machine was driven, was adapted to be driven by a motor running at a constant speed, and variable speeddriving mechanism was connected with that drivin shaft by which the press i might be driven at either a slow speed or a high speed while the main driving shaftwas constantly driven at the same speed and. with? out stopping the press, and the apparatus was especially adapted to thatend.

In my present invention, the variable speed driving mechanism is adapted to be driven by an electric motor whose speed may be varied, and it is the object of niy invention to provide a driving mechanism which may be shifted from the low. speed to the high speed while the press is in motion and in which at the same time that the shift is made the speed of the motor may be also varied and shifted gradually from low speed to high speed as the change between low speed and high speed in, the driving mechanism is made. By means of this mechanism, I can obtain a much greater variation in speed and a more gradual shift from the slow speed to the high speed of the ultimately driven mechanism, such as a printing press. I accomplish this object by Specification of Letters Patent. Application filed October 11, 1909. Serial No. 522,128.

Patented Aug. 16, 1910.

the means shown in the drawings and hereinafter specifically described.

That which I believe to be new will be pointed out in the claims.

In the drawings :-Figure 1 is a to or plan view with one of the bed frames ofithe press partly broken away to expose 'the parts below. Fig. 2 is an end elevation, showing in dotted lines a part of the pressframe and press driving gears. Fig. 3 is a section on line 33 of Fig. 2. Fig. 4 is a detail, being a section on line 4% of Fig. 1. Fig. 5 is a detail, being a section on line of Fig. 3. Fig. 6 is a detail, being a sect on on line 6--6 of Fig. 3. Fig. 7 is an enlarged detail, being a section on line 7-7 of Fig. 1. Fig. 8 is an enlarged detail, being a section on line 8-8 of Fig. 4. Fig. 9 is an enlarged detail, beinga section on line 9-9 ofFlg. 1. Fig. 10 is an enlarg d detail, being a section on line 10-10 t Fig. 9. Fig. 10 is a detail, being a view of the stop mechanism by which the devices for changing the speed of the motor may be locked at which are mounted driving gears 14;-15-.

16 17,-all shown in dotted lines,-the gear 17 me hing with driving gear 15 and with a gear 18,also in dotted lines, which meshes with the driving gear on the driving mechanism hereinafter described.

19 indicates the main driving shaft, which is journaled in the frame 11 and is provided upon its outer end with a gear 20 which is driven by means of a motor A conventionally illustrated in Fig. 3.

21 indicates a gear which is keyed upon the driving shaft 19.

22 indicates a spider which is revolubly mounted upon the shaft 19 adjacent to the gear 21 and is provided with a flange rim 23. v

24 indicates a flexible brake band upon which is mounted a brake shoe 25, which, engaging the flange 23 of the spider 22,-is adapted to hold the same against rotation when applied in the manner hereinafter described.

26-27 indicate small-sized gears which are revolubly mounted on suitable studs on] the arms of the spider 22 and mesh with the gear 21.

2829 indicate gears which are keyed or otherwise secured to stub-shafts 30 which are journaled in the arms of the spider 22 and mesh respectively with the gears 2627.

3132 indicate gears of smaller diameter than the gears 2829' and keyed or otherwise secured to the other ends of the stubshafts 30.

33 indicates a disk which is revolubly mounted upon the shaft 19 adjacent to the spider 22, and carries secured thereto by any appropriate means, as by bolts 34, a gear ring 35, which meshes with the gears 31-32.

36 indicates a ratchet wheel which is keyed or otherwise secured to the hub of the disk 33.

37 indicates a pawl disk which is keyed or otherwise secured upon a sleeve 38 which is revolubly mounted upon the shaft 19. The pawl disk 37 is provided with pawls 39 which are adapted to be engaged by the ratchet wheel 36 so that when the shaft and ratchet are rotated inthe vdirection indicated by the arrow on Fig. 5 the sleeve 38 will be carried around with it.

40 indicates a gear which is keyed or otherwise secured to the sleeve 38, and,

meshing with the gear 18,through the me-- dium of the gears 1714l516, operates to drive the press.

41 indicates a drum which forms one member of a clutch mechanism-which is preferably formed integral with the sleeve 38.

42 indicates a flexible brake band to which is secured a brake shoe 43 which is adapted when thrown on in the manner hereinafter described to brake the drum 41 and stop thereof. The inner surface of the rim of the clutch drum 41 and the outer periphery of the clutch 45 are correspondingly beveled and the clutch member 45 is provided with a clutch band 47 which is adapted, when the clutch 45 is slid into engagement with. the clutch drum 41, to engage the inner surface of the rim thereof and cause the clutch drum 41 to be driven by the rotation of the clutch member 45 on the shaft 19. The hub 46 is provided with a peripheral groove 48.

From the above description, it will be obvious that when the shaft 19 by means of the gear 20 is driven in the direction shown by arrows in Fig. 2, the gears 2829 will be driven, through the intermediate gears 2627, in the same direction,that

is, in the direction indicated by arrows in the said figure,and if the brake 25 is free from the rim of the spider 22 so as to permit it to rotate, the spider will be rotated in the same direction,that is, in the direction indicated by arrow on Fig. 2,the gears 3132 traveling around on the interior gear ring 35, and the speed at which this revolution will occur will depend upon the relative size of the gear 21 and the interior gear ring 35. When, however, the brake is applied to the spider, in the manner hereinafter described, so as to hold it against rotation, the ears 28-29 will be merely rotated in their earings, rotating in the same direction the gears 31-32 which are keyed to the same stub-shafts. This will cause the disk 33 to be rotated upon the shaft 19 and in the same direction, the speed of this rotation,-however, being still further diminished by the difference in size between the gears 2829 and the gears 3132, thus driving the disk at a much slower speed than the shaft 19. The engagement of the ratchet wheel 36 with the pawls 39 will drive in the same direction and at the same speed the pawl disk 37, which, being keyed to the sleeve 38, will rotate the gear 40 in the same direction and at the same speed as the disk 33 and pawl disk 37, which, through the medium of the several driving gears. 14 to 18, will drive the press at slow speed. Of course during this movement the clutch members will be thrown out of engagement in the manner hereinafter described. If now the clutch members are thrown into engagement by the inward movement of the hub 46, which engagement will be gradual and not sudden by reason of the beveled engaging surfaces of the clutch members, the clutch drum 41 will gradually, as the clutch members are thrown into complete and tight engagement, be rotated in the same direction as the shaft 19 and at the same speed as said shaft, rotating of course in the same direction the ear 40 and driving the press through the medium of the interposed gearing at high speed. Of course the pawl disk 37 will also be driven at the same speed. The brake 25 still being on during the engagement of the clutch members and the spider 22 being therefore held against rotation, the ratchet 36 will be driven at the slow speed above described, but the pawl 39 will slip over the ratchet teeth permitting the pawl-disk 37 and connected parts to be driven at the high speed.

It will be obvious from the above description that the high speed mechanism may thus be put into operative relation withthe press before the slow speed is put out of operative relation-therewith, thus preventing the running of'the press by its mere momentum and consequent slowing down during the period of shifting from one speed to the other. If the brake 25 is then thrown ofi, the spider 22 will be free to rotate and will take up a speed the same as the shaft 19 through the operation of the several gears connected therewith above described.

The relative sizes of the gears will of course be such as to secure the desired difierence between the slow and the high speeds, and may be varied to suit the demands of the case, it being obvious that the greater the difference between the gear 21 and the internal gear 34 and between the gears 2829 and 31-32, the greater will be the difference between the relative speeds of the shaft 19 and the disk 33 and therefore between the slow speed andthe high speed of the same. When the clutch membersarc disengaged, the brake 25 also being disengaged, if the brake 43 is applied, in the man ner hereinafter described, to the drum 41, the movement of the driving mechanism will be braked and the press driven thereby sto pe'd.

he various parts above described are thrown into and out of engagement by the following mechanism.

49 indicates a rock shaft which is journaled in suitable bearings below the base frames 12.

50 indicates a ratchet wheel provided with two sets of teeth 5152, which is keyed or otherwise secured to the outer end of the rock shaft 49.

53 indicates a hand-lever which is provided at its :u per end with the usual latch 54 which is adapted to engage an arc-bar 55 so as to be held therein in either of three.

positions,-that is to say, with the press silenced, with the press running at slow speed, and with'the press running at full speed,as indicated respectively in Fig. 2 by the word Off and by the letters S and F, the parts in the several figures being represented in the position in which they are when running at full speed.

56 indicates a pawl which is pivoted on the lever 58 above the ratchet wheel 50 and is adapted to engage the ratchet teeth 51. The pawl 56 is provided with anarm 56 which is adapted to be engaged by the pin 57 mounted in one of the base plates 12 so that when the lever is swung past the slow speed notch the pawl 56 will be lifted out of engagement with the teeth 51.

58 indicates a pawl which is pivotally car ried upon the lower arm of the lever 53 and is adapted to engage the ratchet teeth 52 of the ratchet wheel 50 when the lever is swung to the right toward the off position.

59 (see Figs. 4 and 9) indicates a sleeve which is secured to the rock-shaft 49 and, is provided with a lug 60, which, as is best shown in said figures, is referabl integral therewith and slopes s 1ghtly- 'ownward therefrom when the shaft 49 is in normal position.

61 indicates an arm which is pivotally connected at its upper end with a suitable bracket, as (32, on the under side of the base plate 12, and swings downward therefrom. The arm 61 is provided with a catch 63. which, when the arm 61 is free to swing to its lowest position and the rock shaft 49 is rocked as hereinafter described by raising the arm 61, is adapted to drop in behind and below the lug ()0 and prevent the rock shaft 49 from being rocked back into its normal position until the latch 63 is disengaged.

64 indicates a cam which is carried upon the lower end of the lever 53 and is adapted, when the parts are swung into the position shown in the figures, to engage the lower end of the arm 61, and, throwing it outward,

in the position best shown in Fig. to free collar 68, tends to yieldingly hold the rock.

shaft 49 in normal position,that is to say, the position indicated by the several figures in which both brakes are off.

indicates a lever which is pivotally mounted in a suitable bracket 71 which depends from one of the frame bars 12 and is secured thereto. The lower end of the lever 70 is connected by a link 72 with the lower arm of the lever 53, and it carries upon its upper end a beveled segmental gear 73.

74 indicates a shaft which is journaled in suitable bearings in the bracket 71 and carrics near its outer end a bevel gear 75 which meshes with the beveled segmental gear 73. "When the lever 53 is rocked .in either direction, the lever 70 will be correspondingly moved through the medium of the link 72, and, through the medium of the beveled segmental gear 73 and gear 75, the shaft 74 will be given a partial rotation or be rocked in one direction or the other.

7 6 indicates acollar which is secured to the lower end of the shaft- 74 and is provided pith an arm 77 extending outward there- Poll).

78 indicates a slide rod whichis slidingly ried uponthe slide rod .7 8 between the col- .lars'i83' and 84.

86 indicates a lever which at one end is provided with a fork 87 which embraces the rod 78 and is adapted to be engaged by collars 82 and 84 and at the other end with a fork 88 which. embraces the hub 46 and engages the peripheral groove 48 therein. The

lever 86 is pivotally mounted upon a suit able bracket, as 89, on the frame 11.

It will be obvious from the above description that when the slide rod 78 is moved downward in Fig. 1 the collar 82 engaging the fork 87 will rock the lever in one direcright to left.

tion and throw the clutch members out of engagement. When the slide rod is moved in the other direction, the spring-seated collar 84 will engage the fork 87, and, rocking the lever 86 in the other direction, will move the clutch members into engagement. It will also be evident that when the lever 53 is moved from right to left in Fig. 2 the relation of the parts is such that the clutch members will be moved toward one another and ultimately into engagement, and when the lever is moved in the other direction the clutch members will be moved away from each other and out of engagement, the pinned collars 82 and 83 and the springseated collar 84 bein suitably spaced on said shaft to permit the engagement of the clutch members at the proper time,that is to say, after the slow speed position of the lever has been passed in its movement from 90 indicates a collar-which is keyed or otherwise secured to the shaft 49 and carries an arm 91 preferably integral therewith. The arm 91 carries a spring-seated pawl 92, best shown in Figs. 1 and 2.

94 indicates a collar which is revolubly mounted on the rock-shaft 49 adjacent to the collar 90, and is provided on its periphery with a lug 95 which is adapted to be engaged by the pawl 92 when the rock shaft is rotated clock-wise in Fig. 7 so as to rotate the collar 94 in the same direction. The collar 94 is provided with an arm 96 which projects upward therefrom and is preferably formed integral therewith.

97 indicates a rod which is pivotally connected at one end with the arm 96 and is adapted at its other endto slide freely in and out of an opening 98 in part of the framework 12 (see Fig. 7).

99 indicates a collar which is pinned or otherwise adjustably secured to the rod 97.

100 indicates a spiral spring which is carried on the rod 97 and bears at one end upon the collar 99 and at the other end upon the frame 12. The spiral spring 100 tends to yieldingly hold the arm 96 and sleeve 94 in the position shown in Fig. 7 and return the same to said position when said arm 96 is rocked to the right in Fig. 7

101 indicates a link, one end of which is pivotally connected with the arm 96 on the collar 94. The other end of the link 101 is pivotally connected with an arm 102 which is secured to and preferably formed integral with a collar 103 secured to a shaft 104 which is rotatably mounted in suitable bearings 105 on the frame 11.

The brake band 42, by means of a rod 106, isconnected with a lug.107 upon the arm 102, and the other end of the brake band 42 is secured to a suitable collar 108 loosely .mounted upon the shaft 104. When. the

shaft 49 is rocked clock-wise in Fig. 7 by the swinging of the lever 53 to the right and consequent engagement of the pawl 58 with ratchet teeth 52 on disk 50, the collar 90 will be rocked with it, the pawl 92 engaging the lug 95, rocking the arm 96 against the action of the spring 100 and tightening the brake band 42 so as to brake the mechanism. When the shaft 49 is rocked in the other direction so that the pawl 92 is freed from the lug 95, the spring 100 will immediately rock the collar 94 back again and free the brake. 109 indicates a collar which is suitably secured to the end of the rock shaft 49 opposite the lever 53 and is provided with an arm 110 preferably integral therewith.

111 indicates a rock shaft which is journaled in suitable bearings 112 on the frame 11.

113 indicates a collar which is keyed or otherwise secured to one end of the rock shaft 111 in registry with the collar 109 and is provided with an arm 114 projecting upward therefrom and preferably integral therewith.

115 indicates a link which is pivotally connected at one end to the end of the arm 110 and at the other end with the end of the arm 114, whereby, when said rock shaft 49 is rocked in either direction, the rock shaft 111 will be correspondingly rocked.

116 indicates a collar which is keyed or otherwise secured to the rock shaft 111 in registry with the'spider 22 and is provided upon its periphery with suitable lugs 117- 118 preferably formed integral therewith. By means of flexible rods 119120, the ends of the flexible brake band 24 are connected respectively with the lugs 117 and 118. The

" ends of the rods 119120 are screw-threaded oewivo so that they may be adjustably secured to from its off position into the slow position,-that is to say from right to left in Fig". 2,'--by means of the engagement of the pawl 56 with the ratchet teeth 51, the rock shaft .111 will be rocked in the opposite direction, tightening the brake band 24: and

thereby braking the spider 22 and holding it against rotation. When the pawl 56 is thrown out of engagement with the ratchet teeth 51 by the pin 57 as the lever 53 passes the slow speed position, the spring 69 at once rocks the shaft 19 clock-wise back again to normal position, which, rotating the rock shaft 111 in the opposite direction, frees the brake 25 and permits the spider 22 to rotate. 200 indicates a controller which is adapted to be connected by suitablewires to the motor A, and is provided with the usual controller handle 201. The controller may be of any. well-known type, and the handle is adapted when swung from the o'fi' to slow position to drive the motor at a slow speed and when moved from the slow past the several contact pounds 202 to gradually turn on more and more current to the motor so as to gradually bring it to its full speed.

203 indicates a link, one end of which is pivotally connected to the controller handle 201 and is provided at its other end with a piston 204 which slides air-tight in a dash pot 205 provided at its closed end with a small opening 206 to gradually permit the air behind the piston to escape as the piston is moved inward.

207 indicates a collar which is journaled on the short shaft 208 supported in suitable bearings from-the framework. The collar 207 is "provided with two arms 209-210, preferably formed integral with said collar. The collar is notched on its periphery so as to form ashoulder 21.1 adapted to be engaged by a dog hereinafter described. The upper end of the arm 209 is pivotally connected with the link 203.

212 indicates a rod which is pivotally connected-at one end to the lower end of the arm 210, and is rigidly connected at the other end with the block 213 which is rigidly secured within one end of a cylinder 214:.

215 indicates a piston. which is slidingly mounted in the cylinder 21%.

216 indicates a spiral spring. interposed between the block or head 213 and the piston 215 inside of the cylinder 214.

217 indicates a piston rod one end of. which is secured to the piston 215 and the other pivotally connected with the lower end of the lever 53.

218 indicates a lug which, by means of a set-screw or other appropriate means, is ad justably secured to the piston-rod 217.

219 indicates a collar Whichis journaled on a suitable shaft 220, supported in suitable brackets from the framework and pro vided with. two arms 221 222 preferably formed integralwvith the collar. c

223 indicates a link one end, of which is pivotally mounted u on the arm 221 and the other end passes reely through a block 224 preferably formed integral with and depending from the collar 20?.

the link 223. 226 indicates a spring which is interposed between the block 225 and the block 224, and operates by bearing against said block 225 when the collar 2241 is held in fined position to force the lower arm on the collar 219 to the left in liig. 2. 227 indicates a linlr, one end of which'is connected pivotally with the upper end, of the arm 222 and the other end is pivotally connected with the lower end of an arm 228 depending from and preferably formed in tegral with a collar 229 which is journaled upon a suitable shaft 230 mounted in suitable supports in the machine,

the collar 229 and projects to the left over the collar 207 so as to engage the shoulder 211 011 said collar 20"? and when so engaged to prevent the counter-clockwise rotation of the collar 20?. The pressure of the spring 226 on the collar 225 and block 224: tends to force the rod 223 to the left, rocking the right, and hence, through the connection of "the link 227, to rock the arm 228 to the right and to yieldingly hold the dog 231 in engagement with the surface of the collar 207.

The operation of the above-described mechanism is as follows: When the lever 53 is at full speed position, as shown in the figures, the controller handle is also moved to the full speed, the motor is running at full speed, the clutch members are engaged, both brakes are off, and, the arm 61 being thrown by the cam 64: out of engagement with the lug 60, the shaft 19 is yieldingly held in normal position by the spring 69, and the driving; mechanism is running at full speed. If the lever 53 is now'swung to the right to the off position, the cam 64 will. be moved out of the way of the arm 61 which will allow the arm 61 to drop toward the normal position with the latch 63 hearing against the surface of the lug 60 and ready to drop into position behind it when the lug 60 is raised by the rotation of the rock shaft 4C9 by the movement of the lever in the other direction as hereinafter described. As the lever 53 swings away from the full speed position, by the action 225 indicates a collar which is secured to arm 221 to the left and the arm222 to the 231indicates a dog which is secured on of the link 72, segmental gear 73, bevel gear 75, rock-shaft 74, and link 71, the slide rod 78 will be moved inward so as to disengage the clutch members by the action of the collar 82 on fork 87 of lever 86. By the same movement of the lever, the pawl 58, before the lever 53 reaches the oft position, will engage the teeth 52 of the disk 50, rocking the shaft 49 clock-wise. Just before the lever reaches the ofi' position, the pawl 92 will by its movement engage" the lug 95 on collar 94, rocking it in the same direction, and, applying the brake 43 to the clutch drum 41, will stop the movement of the mechanism and of the press, and the parts will be held in this braked position as long as the lever is held in its off position.

At the same time, by this motion of the lever to the'right, the controller arm will be swung to the right to the off position. This will be accomplished by the lower end of the lever 53 pulling the piston-rod 217 to the left, pulling with it the cylinder 214 and the rod 212. This rocks the lower arm on the collar 207 to the left, and, moving the upper arm to. the right through the medium of the rod 203 swings the controller arm to the right to the off position, the parts being properly adjusted to so move it, and moving the piston 204 out to the open end of the cylinder 205. This same movementwill free the lug 218 from engage ment with the arm 221 leaving it free to rock under the influence of the spring 226. As the collar 207 rocks in a clock-wise direction, the pawl or dog 231 drops into the notch beyond the shoulder 211 and the full movement to the right is such as to carry the shoulder 211 somewhat beyond the engaging end of the dog 231 so as to permit it to be moved to the left on the return movement of the lever 53 hereinafter described a suiiicient amount to bring the controller arm 201 upon the slow speed before the dog engages the shoulder. The machine is now in position to be started.

The lever 53 is now swung to the left, moving of course its lower end to the right. This pushes the piston rod 217 to the right against the spring 216 in the cylinder 214,

- and, the parts being free to move by reason of the fact that the dog 213 is somewhat beyond the shoulder 211 as above described, and the tension of the spring being sufiicient to permit of it, the upper arm 209 is ,moved to the left, swin in the controller arm 201 from the off to the slow position, and moving the piston 204 slightly inward into the dash-pot 205. This rocking of the collar 207 slightly to the left or counter-clockwise brings the shoulder 211 into engagement with the dog or' pawl 231, the parts which operate the controller being thus held against further movement until released as hereinafter described" The lever eemvo is thus brought into slow position, and the motor is set running at slow speed. As soon as the lever 53 begins its movement to the left, the pawl 56 immediately engages one of the teeth 51 on the ratchet 50, moving it contra-clock-wise in the figures, and rocking with it in the same direction the shaft 49 against the action of the spring 69. This,

movement first of all releases the pawl 92 from the lug 95, leaving the sleeve 94 free to be rocked by the spring 100 which immediately acts to rock the sleeve 94 and free the stopping brake 43 fr.om the mechanism. The same movement of the lever begins to move the slide rod 78, but the parts are so spaced that the collar 84 does not immediately bear upon the fork 87 to throw the clutch members into engagement until after the slow speed )osition is passed. The rocking of the rock shaft 49, however, immediately begins to tighten the flexible brake band 24 and thus applies the brake 25 to the spider 22, holding the same against rotation. At the same time the lug 60 is lifted to a position permitting the arm 61 to move to its lowest position with the latch 63 dropping below the lug 60 and preventing the return of the rock shaft 49 by the operation of the spring 69 to its normal position until after the arm 61 is swung out again by the action of the cam on the further movement of the lever. When the lever 53 is thus held at the slow speed position, the pawl 56 is still in ehgagement with the teeth 51, but the lever has moved into such position that the lug 57 is just ready to act upon the arm 56 of the pawl 56 so as to move it out of engagement with the ratchet teeth 51 upon the further movement of the lever 53. The stopping brake 43 being thus off, and the spider 22 being held against rotation by the brake 25, the mechanism and the press will be driven at the slow speed in the manner hereinabove described, and will continue to so run until the further movement of the lever. So far, the motor is running at slow speed, and the slow-speed driving mechanism only is engaged.

It now being desired to pass to the high speed, the lever is swung still farther to the left toward the position shown in the figures. The pin 57, as soon as the lever is swung out of slow-speed position, engaging the arm .56 of the pawl 56, throws it out of engagement with the teeth 51, thus preventing further contra-clock-wise rocking of the rock shaft 49, which, however, is prevented tact with the fork 87, rocks the' lever 86 and "throws the clutch members intoengagement,

- causing the clutch drum 41 to gradually take the full speed of the drivin shaft 15) and thus driving the press by the 'ull speed driving mechanism. As this full speed movement is taken up, and the mechanism is running by the engagement of the clutch members, and just as a complete and tight engagement of the clutch members is being made, the can] 64; on the lower end of the lever .33 en 'aging the lower end of the arm 61, pushes it to one side, freeing the latch 63 from the lug This permits the spring (59 to at once rock the shaft into normal position, freeing the brake 25 from the spider 22 and permitting it to take up the movement of the shaft 19. At the same time that the movement of the lever from slow to full speed is causing the operation of the variable speed driv ing mechanism above described, the move ment of the lower arm, of the lever 53 to the right is moving the piston-rod. 217 to the right, carrying with it the lug 218. This of course would cause a movement the arm 210 to the right if it were not for the en gagement of the pawl 231 with the shoulder 211, which prevents the counterclockwise rotation of the collar 207. The effect of the movement, therefore until the shoulder is released from the dog as hereinafter dcscribed, is simply to compress the spring 216 in the cylinder 21%, and the motor therefore during the period of bringing the full speed driving mechanism into engagement is running at slow speed. The parts, however, are so adjusted that just before the lever reaches the extreme limit of its motion to the full-speed position the dog 218 is brought into contact with the arm 221 on the collar 219, rocking it to the right against the actionof the spring .226. This of course rocks the arm 222 to the left. and, through the medium of the link 227 and arm 228, the pawl or do 231 is liftcdout of engagement with the shoulder 211, leaving the collar 207 free to rotate. The expansive force, therefore, of the spring in the cylinder 214, compressed as above described, thereupon forces the cylinder 214 to the right in Fig. 2, moving with'it the link 212 and the arm 210, thus moving the arm 20$) to the left, forcing the piston 204 into the dash-pot 205, and thereby swinging the controller arm from the slow speed position over the various contacts to the full speed position. The spring in the cylinder 214, however, does not act instantly, because the piston 204 in the dash-pot 205 compresses the air between it and the end of the cylinder, the air escaping only through the small opening 206. This will, of course prevent the instant acting of the spring and therefore will cause the gradual motion of the controller arm from slow speed to high speed, passing over the several contacts, and thus, the high speed driving mechanism, being already engaged thrown into operative relation with the press, and, as the movement of the lever continues, the driving mechanism is moved into full speed relation before the slow speed driving mechanism is thrown out of operative relation. This, as has been pointed out, prevents the occurrence of a period of time between the throwing out of the slow speed and the throwing in of the high speed during which the press, running by its own momentum only, would slow town enough to cause breakages in the web when the high speed was thrown in. It will also be seen that the motor continues to run at the slow speed substantially until the high speed driving mechanism is thrown into operative relation and that as soon as that high speed engagement of the driving mechanism is effected the same movement of the lever has caused such movement of the parts that the devices which held the controller at the slow speed position hitherto have been released and the controller arm is gradually moved so as to gradually increase the speed of the motor from slow speed to high speed. I therefore provide, by the above devices, a mechanism by which the relative proportion of the slow speed to the high speed of the press may be considerably increased by means of which the high speed is not taken up at once, but, after the driving mechanism has been moved into high speed position, the speed of the motor or other prime mover is also gradually and automatically increased so as to gradually increase the speed of the high speed mechanism until it reaches full speed.

What I claim as my invent-ion and desire to secure by Letters Patent is,"

1. In combination, a prime mover, a controller therefor, a driving shaft driven by said prime mover, a driving gear, slow speed mechanism connected with said driving shaft and adapted to be connected with said driving gear, high speed mechanism connected with said driving shaft and adapted tobe connected with said driving gear, shifting mechanism connected with said controller and with said slow speed and said high speed mechanisms and adapted by its movement to shift said controller to slow speed position, to operatively connect said slow speed mechanism with said driving car, and then to operatively connect said igh speed mechanlsm with said driving gear, and then to shift said controller to high speed position.

2. In combination, a prime mover, a controller therefor, a driving shaft driven by said prime mover, a driving gear, slow speed mechanism connected with said driving shaft and adapted to be connected with said driving'gear, high speed mechanism connected with said driving shaft and adapted to be connected with said driving gear, shifting mechanism connected with said controller and with said slow speed and said high speed mechanisms and adapted by its movement to shift said controller to slow speed position, to operatively connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear, and then to gradually shift said controller to high speed position.

3. In combination, a prime mover, a controller therefor, a driving shaft driven by said prime mover, a driving gear, slow speed mechanism connected with said driving shaft .and adapted to be connected with said driving gear, high speed mechanism connected with said driving shaft and adapted to be connected with said driving gear, shifting mechanism connected with said controller and with said slow speed and said high speed mechanisms and adapted by its move ment to shift said controller to slow speed position, to operatively connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear while said slow speed mechanism is still" in operative relation with said driving gear, and then to disconnect said slow speed mechanism from said driving gear and shift said controller gradually to high speed position.

4. In combination, a motor, a controller therefor, a driving shaft driven 'by said motor, a driving gear, slow speed mechanism connected with said driving shaft and adapted to be connected with said driving gear,

, high speed mechanism connected ,with said driving shaft and adapted to be connected with said driving gear, a lever, mechanism operated by said lever and connected with said controller and with said low speed and high speed mechanisms and adapted by the mechanism connected with said driving shaft and adapted to be operatively connected with said driving gear, a lever, mechanism. connected with said lever and with said slow speed and said high speed mechanisms and adapted by the movement of said lever to operatively connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear, and then to release said slow speed mechanism; connections between said lever and said controller and adapted by the movement of said lever to shift said controller to slow speed position, said connections including a spring adapted to be compressed by the movement of said lever and by its resiliency to move said controller from slow speed to high speed position.

6. In combination, a motor, a controller therefor, a driveshaft, a driving gear, slow speed mechanism connected with said driving shaft and adapted to be operatively connected with said driving gear, high speed mechanism connected with said drivlng shaft and adapted. to be operatively connected with said driving gear, a lever, mechanism connected with said lever and with said slow speed and said high speed mechanisms and adapted by the movement of said lever to operatively connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear, and then to release said slow speed mechanism, connections between said lever and said controller and adapted by the movement of said lever to shift said controller to slow speed position, said connections including a spring adapted to be compressed by the movement of said lever and by its resiliency to move said controller from slow speed to high speed position, and also including means connected with said controller and adapted to act against said spring to cause sald controller to shift gradually from slow speed to high speed position.

7. In combination, a motor, a controller therefor, a drive shaft, a driving gear, slow speed mechanism connected with said driving shaft and adapted to be operatively connected with said driving gear, high speed mechanism connected with said driving shaft and adapted to be operatively connected with said driving gear, a lever, mechanism connected with said lever and with said slow speed and said high speed mechanisms and adapted by the movement of said lever to operatively connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear, and then to release said slow speed mechanism, connections between said lever and said controller and adapted by the movement of said lever ,to shift said controller to slowspeed position, meansadapted to automatically lock said controller in slow speed position and to be released by the further movement of said lever, said connections including a sprin interposed between said lever and sai controller and adapted to be compressed by the further movement of said lever and by its resiliency to move said controller from said slow speed position to high speedposition, and also including means connected with said consaid slow speed and said high speed mechanisms and adapted b the movement of said lever to operative y connect said slow speed mechanism with said driving gear, then to operatively connect said high speed mechanism with said driving gear, and then to release said slow speed mechanism, connections between said lever and said controller and adapted by the movement of said lever to shift said controller to slow speed position, means adapted to automatically lock said controller in slow speed position and to be released by the further movement of said lever, said connections including a spring interposed between said lever and said controller and adapted to be compressed by the further movement of said lever and by its resiliency to move said controller froni said slow speed position to high speed position. ,and also including a dash-pot, a piston therein, and connections between said piston and said controller and adapted to force said piston into said dashpot when said controller is shifted from slow speed to high speed position and thereby act against said spring. I

9. In combination, a prime movena controller therefor, a main drive wheel having a into and out of operative engagement with said main drivewheel, and connections between said lever and said controller and adapted to move said controller to slow speed posltion before said speed-reducing mechanism is put into operative relation with said driving wheel, and, after, said clutch members are brought into engagement, to move said controller from-said slow speed to high speed position. a

10. In combination, a motor, a controller therefor, a driving shaft driven by said motor, a main drive wheel having a clutch member, a co -acting clutch member driven by said driving shaft, speed-reducing gearing connected with said main drive wheel for driving the same from said main driving shaft at a slower speed, ratchet mechanism for connecting said speed-reducing mechanism with said driving shaft and arranged to' be automatically disconnected from the driving shaft when said clutch members cotiperate to increase the speed of the main drive wheel, and shifting mechanism connected with said speed-reducing gearing, with said clutch members, and with said controller, and adapted by its movement to first shift said controller to slow speed position, then to bring said speed-reducing gearing into operative relation with said driving wheel, then to bring said clutch members into cooperative relation with each other, and then to shift said controller from slow speed to high speed position.

11. In combination, a motor, a controller therefor, a driving shaft driven by said motor, a main drive wheel having iL-CllltCll member, a co-acting clutch member driven by said driving shaft, speed-reducing gearing connected with said main drive wheel for driving the same from said main driving shaft at a slower speed, ratchet mechanism for connecting said speed-reducing mechanism with said drivin shaft and arranged to be automatically disconnected from the driving shaft when said clutch members cooperate to increase the speed of the main drive wheel, a lever, connections between said lever and said speed-reducin gearing lation with said main drive wheel, connections between said lever and said controller andadapted by the movement of said lever to move said controller to slow speed position before said speed-reducing gearing is brought into operative relation with the drive wheel and said connections including between said ed to be compressed by the movement of said lever in bringing said .clutch members into cooperative relation and by its resilienc to move said controller from slow spee high s eed position.

12. n combination, a motor, a controller lever and said controller adapting, connected :Wltll' said main drive Wheel for driving the same from said main-driving shaft at a slower speed, ratchet mechanism for connecting said speedredueing mechan ism. with said driving shaft and arranged to be automatically disconnected from the driving shaft when said clutch members cooperate-toinerease the speed of the main drive wheel,-a=lever connections between said lever andg-said speed-reducing gearing and said clutchv members and adapted to throwthe samei-nto and outof operative relation with said main drivewheel, connections between saidlever and said controller and adapted .by the-movementof, said "lever to move'said' speed-reducing gearing is-bronght into op-' erative relation Withthe" drive Wheel, said connections including between said lever and said controll'er adapted to be compressed by themoveinent of said lever in bringing said clutch members into cooperative relation and by its resiliency to move said controller from slow speed tohigh speed position, and also includingmeans' connectedwith said controller and adapted to act against said spring to cause a gradual movement of said controller from slow speed position to high speed position.

JOSEPH J. WALSER.

- Witriessesf CHARLES E. PIOKARD, W.- H. DE BUsK.