US1488737A - Driving mechanism for reciprocating platens - Google Patents

Description

April 1, 1924. 1M88,737

c. M. coNRA sw-a DRIVING MECHANISM FOR RECIPROCATINGPLATENS Fild Oct. 2.9, 1919 6 Sheets-:Sheet 1 //V VE/VTOu' (o/Yawn M Cam/M050- April 1'; 1924;

i:. M. coNRApsoN DRIVING MECHANISM-FOR BECIBROCATING PLATENS 6 Sheets-Sheet 2 Filed Oct. 29, 1919 T. zen/15m.

' 6 Sheets-Sheet 4 April 1, 1924; v

' c. M. CONRADSON 4 DRIVING MECHANISM FOR RECIPROCATING PLATENS Filed 001;. 2.9 1919 April 1, 1924;

c. M. CONRAD$ON DRIVING MECHANISM FOR RECIPROCATING PLA' I'ENS s sheet 6 Filed Oct. 29 1919 Q ml Mrs/370R.

Co/mno/M'c'o/mmsam Patented Apr. 1, 1Q24.

TENT OFFICE.

CONRAD M. CONRAJDSON, OF MADISON, WISCONSIN, ASSIGNOR TO JOSEPH 'I. RYERSON & SON, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DRIVING- MEC'HANISM FOR BECIPROCATING PLATENS.

Application filed October 29, 1919. Serial No. 334,213.

1 0 aZZ whom it may concern.-

- Be it known that 1, German M. CONRAD- soN, a citizen of the United States, resident of Madison, county of Dane, State of,Wiscousin, have invented certain new and useful improvements in Driving Mechanisms for Reciprocating Platens, of which the fol-- lowing is a specification.

My invention relates in general to platens having one or more forward or working speeds and a faster or different return speed and more particularly to platens for metal working planers, shapers and the like.

The object of the invention is in general to provide a driving mechanism for this class of machines that will permit a great variety of rapid and accurate work in a va riety of materials in machines particularly of the heavy type, and that will at the same time be equally adapted and applicable to medium size and small machines.

More specifically the objects are: First, to provide a wide range of forward working or cutting speeds, a single quick return movement for the work-holding platen, and simple convenient means for changing the speeds. Second, to provide means for feeding the cutting tool or tools positively, accurately and rapidly at the end of the stroke of the platen. Third, to provide means for reversing the stroke of the platen quickly and positively on a minimum length oii travel. Fourth, to dispense with the double pulleydrive and the cumbersome reversing method of sliding a belt from one pulley to another and to substitute therefor a single pulley or motor drive.

In all sizes of planing machines, but more particularly in large planers, the double reversing pulleys are a source of ine'iiiciency and power waste. mary driving shaft must revolve at a high speed in order to transmit sufficient power through high ratio speed reducing gears to the actuating platen. The inertia of the driving pulleys, owing to their high peripheral speed, prevents a quick reverse of direction and results in loss of time and power in overcoming the inertia of the pulleys and inordinate wear of the belt occasioned by slippage.

l urthermore, on account of the necessity of shifting the belt as quickly as possible, especially in working on short cuts in mate- For heavy cuts the pririal wherehigh cutting speedand feeds are required, a Wide belt can not be used and heavy strain and excesive Wear is entailed anism for the work-holding platen so asto prevent chattering of the Work, and to provide mechanism having a primary drive shaft which may be driven either by a single pulley and belt or by an individual motor.

My invention consists generally in two pneumatically operated clutch units mounted on a single clutch shaft, one clutch unit being arrangedto drive the shaft in one direction and the other to drivethe shaft in the opposite direction at different speeds, and means for transmitting the corresponding direction and speed through intermediate gearing to the work-holding platen when one of the clutches is set to revolve the shaft.

It further consists in providing means for both manual control and for automatic control bythe reciprocating platen of the admission of air under pressure to the clutches and means for positively unseating one clutch before the other is seated.

My invention further consists in various constructions and combinations, all as hereinafter set forth and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification,

Figure 1 is a side elevation of a section of a planing machine, embodying my invention,

Figure 2 is a transverse sectional View of the clutch shaft and clutches, showing the method of driving the clutches and a part of the transmission gearing.

Figure 3 is a longitudinal section through the transmission gearing and platen, taken on the line 3-3 of'Figures 2 and 4,

Figuree is a horizontal sectional view on the line %-4 of Figure 3,

Figure 5 is a'section'alview on the line 55 of Figure 3 of the speed-changing gears,

speed-changing mechanism for the gears, Figure 7 being a section on the line 7-7 of Figure 6,

Figure 9 is a horizontal sectional View illustrating the air pipe connections,

nigures 6, 7 and 8 are detail views of the.

Figure is a vertical longitudinal section on the line 10-10 of Figure 9, looking in the direction of the arrow,

Figure 11 is a sectional View of the valve controlling the air admissions and exhaust,

Figure 12 is a sectional View on the line 12-42 of Figure 11,

Figure 13 is a detail of the tool-feeding mechanism,

Figure 1% is a sectional view on the line 14 1 i of Figures 9 and 15,

Figure 15 is a section on the line 15-15 of Figure 14.

The clutch mechanism.

As this mechanism is the subject-matter of a separate application I shall but brier'l describe its construction and function, and as the two clutch units designated A and B are identical in construction, the parts referred to will be differentiated by the addition of the letter Z; to the reference numerals of unit B.

In the drawings throughout, 18 represents the platen, 20 the lower main frame and 21 and 21 the side and upper housings, which are rigidly secured to the main frame by bolts or screws 23 (see Figure 1). A hollow shaft 24 is journaled in bearings 25 and 26 in the main frame 20 and carries loosely mounted geared inverted cone clutch members 27 and 27" between thrust collars 28 and 29. The cone clutch members 30 and 30 are slidably mounted on the shaft 2a and are provided with rectangular pins 31 and 31 passing through slots in the shaft 24:. A. spacer rod 32 is arranged in the hollow space of the shaft between the pins and operates to prevent independent clutch movement of the clutch members 30 and 30".

Driving members or discs 33 and 33 are rigidly fastened on the tapered ends of the shaft by Keys 3d and 34t and lock nuts 22 and 22 and are provided with peripheral teeth or splines 35 and 35 Rims 36 and 36 extend backwardly from the cone of the clutches and splines or teeth 37 slidably engage the teeth of the driving members 33 and 33". The conical clutch surfaces 38 of the clutch unit A and the clutch surfaces 38 of the clutch unit B are adapted to seat only one at a time and are normally held unseated by the spacer rod 32. Means are provided to operate both clutches by pneumatic pressure and the following description of these means for one of the clutches will apply to both.

A packing ring 39 is secured to the face of the driving member 33 by means of a keeper rin 40 and makes airtight cont-a ct with the overlapping rim 36 and hub 41 of the cone clutch member 30. Air ducts 42 extending through the rings 39 and 4:0 and to the interior of the hollow shaft 21 are provided in the driving member 33 and connect with insane? duct &3 in plug as which is tight inserted into the end of the shaft and prevents access from the air ducts to the interior of the shaft. The plug 1% projects beyond the housing and colla to, having suitable pipe connections (see gure 1) and provided with stufling collars or nuts 47, is arranged on its outer end.

The outer terminal of the air duct i3 in the plug t4. connects with an annular groove 4-8 in the collar 45 leading to a nipple to which a suitable air conducting pipe 52 may be attached. it will be seen that air under pressure entering the collar i5 and passing through the ducts 13 and 12 will impinge against the face of the sliding cone clutch member 30 and reacting againstthe face of the driving member 33 will forcibly drive the cone clutch member to a seat on the geared clutch member 27, the air being prevented from escaping by the packing ring 39. Before this clutch unit is engaged, however, the opposite clutch unit will be forced out engagement by the movement of the spacer rod between the two clutches.

For the purpose of assembling the clutches, openings are provided in the housings 21 and 21 and heads L9 and as are attached by belts or screws to close these openings. Blocks and 50 are preferably secured to the heads to form bearingsfor the projecting plugs is and i l The control and feed mechanism.

Referring to Figures 2, 3 and 9, the air conducting pipe 52 to clutch unit A is connected to a hollow shaft 53 from the opposite end of which a pipe 54 leads to a short vertical pipe 55 having a branch pipe 56 leadin to the outer end of a cylinder 57 and a branca pipe hdleading to the lower end of a cylindrical valve cage 60. The pipe 52", (see Figures 1 and 2) connected to the opposite collar 415, projects downwards and inwards and connects at 61 (Figure 1) to a horizontal pipe 62 leading in one direction to the inner end of the cylinder 57 and in the opposite direction to branch pipes 63, 64 and 65 and the upper end of the valve cage 60 (see Figure 10). As shown in Figures 11 and 12, the supply pipe 66 coming from a suitable compressed air reservoir or other source (not shown) of air under pressure, is connected to the opposite side ofthe valve cage 60. A. valve 67 having circular flanges 68 provided with slots 69 and fitting the cylindrical bore of the cage, is attached to aevalve rod 70 between the shoulders 71 at the ends of a flattened section 7 2 of the rod passing through the slot 69. These slots also provide access to the upper and lower air chambers of the cage from the recess 78 and supply pipe 66 (Figure 11). An exhaust chamber 7 is formed in the valve 60 between the tlanges O8 and separated from the recess 73 by ribs 75 (see Figure 12) and this chamber is adapted to alternately register with ports 76 and 77 connecting with the branch pipes 58 and respectively. It also permanently registers with a series of exhaust ports 78 leading to the atmosphere. Heads 79 having suitable stuffing glands 80 through which the valve rod 7 0 passes are screwed into the ends of the valve cage and suitable screws 81 serve to secure the cage to the main frame, (see Figure 11).

As is clearly shown in Figure 11, when the valve is in the lowest position, air is exhausted from the clutch unit A. through the pipe 58 and admitted from the supply pipe 66 to the pipe 65 and clutch unit 13. When the valve isin the upper position, air will be exhausted from the upper pipe 65 and clutch unit B and admitted to the lower pipe 58 and clutch unit A. The relative position of the valves may be changed manually or automatically by means of a trip lever 82 (see Figure 10) pivoted to the main frame 20 at 83 and having a handle 84 and preferably a counterweight 85. A link 86 connects the lever 82 to the valve rod and the valve may be moved to either the extreme upper or lower positions by moving the lever as indicated by full and dotted lines in Figure 11, or it may be moved to a neutral position midway between the two, closing both the admission ports 76 and 7 7 to the pipes 58 and 65.

For automatically actuating the trip lever 82 and alternately operating the clutch units A and B, the lever is provided with a ver tically projecting arm 87. Trip lugs 88 and 89 are adiustably fastened to the reciprocating platen 18 (see Figure 1) by suitable clamping screws 90 (Figure 1) and these lugs, traveling horizontally with the platen, as indicated by arrows in Figure 10, contact with the arm 87 and alternately oscillate the lever a suliicient distance to operate the valve 67 from one extreme position to the other. In order to reduce the travel of the platen to the shortest possible extent, and provide means for temporarily suspending the automatic trip action, 1 provide a latch 91 pivoted to the arm 87 at 92 and having a narrow lug 98 normally in the path of the trip lug 88. The latch 91 has a handle 94 and is normally resting against a lug 95, which prevents movement of the latch in one direction, but the latch may be swung on its pivot. in the other direction to lower the lug 98 out of the path of the trip lug 88. The trip lug 89 strikes directly on the arm 87 in the reverse direction to the arrows and operates to retinrn the lever from the dotted. to the full line position in Figure 10. For convenience I prefer to make the valve 87 controllable from both sides of the machine. For this purpose a link 96 is connected to the trip lever 82 and to an arm 97 on a rock shaft 98. This shaft extends through a hollow stationary shaft 99 (see Figures 3, 4 and 9) and carries on the opposite side an arm 97 connected by a link 96 to a trip lever, 82. Tripping mechanisms, identical in construction as described and shown for the lever 82, are provided on this side of the machine and the valve 67 is actuated to control the clutch units A and B as the shaft 98 is rocked by the action of the tripping mechanism on each side of the machine. From the clutch units A and B forward and reverse motion is transmitted to the work-holding platen 18 through mechanism as will be hereinafter described. Simultaneously with the reverse of the platen for the forward or cutting stroke the cutting tool must be advanced before beginning a fresh cut. The feeding mechanism proper for the cutting tool or tools forms no part of the present invention, I

but is partly illustrated to make clear the operation of the machine. It is very essential, however, to the eiiicient performance of planing operations that the cutting tools are quickly and positively moved to a new cutting position after each cut and I therefor also provide pneumatic operated mechanism to actuate the tool feed.

Referring again to Figure 10 and to Figures 13, 14 and 15, the cylinder 57, having heads 100 and 101, is rigidly secured to the housing 21 by screws 102. A piston 103 having a rod 104 passing through the head 100 is arranged in the cylinder 57 and is free for a limited reciprocating movement therein. A stuffing gland 105 is provided in the head 100 and the piston rod 104 being toothed, the rack teeth 106 are in mesh with a pinion 107 on a. shaft 108. A guide block 109 is preferably arranged above the rod 104 to keep the rack properly in mesh with the pinion 107. The shaft 108 has bearings 110 in the housing 21 and other bearings on the opposite side of the machine(notshown) and carries a disc 111 having a V-shaped radial slot or groove 112 (Figure 15). The pinion 107 and disc 111 are keyed to the shaft 108. A block 113 fitting the V-groove 112 and having a. crank pin 111 is arranged for medial adjustment in the groove 112 by ieans of a threaded rod 115 provided with a collar 116 and a check nut 117 and a squared end portion 118. A connecting rod 119 is journaled on the pin 111 and has pivoted connection at 120 with an arm 121 of a toothed segment 122. This segment is pivoted to a bracket 128 at 1241 and its teeth 125 are in mesh with a. vertical rack bar 126 sliding in guides 126 (see Figures 1 and 9) and transmitting motion to the tool-feeding mechanism. This mechanism consists of a pinion 127 meshing with a rack 128 on the rack bar 126 and having a. ratchet and pawl device 129 imparting intermittent rotative movement to a shaft 130 in a predetermined Cit direction (Figure 13). The sha through a gear 131, pinion 132 an gears 133 drives the upright threads- 13 1 for the vertical feed of tool-l, I

lewhl L I will not known construction, further detail. it will he unuers on large size il'lZlCiill as having" d this mechai'iisni is du licated on each side the machine and the ctuati n 3 mechanism as ah ve described 'iZl'lGTQ' OFQ also in duplicats with the s cintroll valve 67. As illustrateci l 15 inure (1, air is (a); L o

through the pipe 56 and, en .iir the inner chamber D through the pipe 62, as moved the piston to the left and tur: ed the pinion 107 in the direction of the aorow one-half revolution. This operation has brought the crank pin tothe extreme outer end of the stroke, oscillated the segment through the connecting rod to raise the reel: bar 126 and rotate the pinion 127, the ratchet device 129 permitting the pinion rotate wi 1 out moving the shaft 13 The position of the oarts, as shown, represent them when the clutch member 30 of the clutcl'i unit 3 has been moved to its seat and the piston 103 has been moved to its extreme outer position, these movements being executen quiclrly and simult'anecusly.

The transmission mechanism.

Reference being now had to Figure l, a primary drive shaft 14:4: is journaled in bearings 145 on the main frame 2() and in a hearing 14kt? on the housing 21. Power may be supplied to this shaft by an llitJVlClUiLl motor M6, preferably arranged on the housing 21 of the machine, or by a single pulley 147, as indicated in dotted lines in l igure 4:. A. pinion 148 on the shaft 1% meshes with the geared clutch member 27" of the clutch unit B (Figure 4 and drives this unit in the direction of the dotted arrow in Figure 3. The primary driving shaft 14% also carries pinions 149, 150, 151 and 152, all of different diameters and these pinions mesh with gears M92150, 151 and 152 of relativel large diameter, arranged slidably on an intermediate rectangular shaft 153, having suitable bearn he eared clutch m mber 27 of the clutch unit in the of the full line arrow in Figu e 3 inch slower speedfr pini 156 the h"""ingbone type,

e clutch shaft 24,

L and luhricatiug ori- 9r hull 16a hav- V'cal herriu hone type ilar teeth of the rota-ti :11 upor 2e shaft 99, arran ed 1 The teetli the hull the he ringhonc racl: 167 of the ore ref rred to, and the oushing Suit 'zontal reciprore provided on of is ena practically filled with a tion of the arrow S in een that if the geared b of the clutch unit B turn e n of the dotted arrow B is put 1 oierative connection with the clutch shaft clutch member 30", as hGTQLOfOiG descrioe 2 ch shaft 24 through the pinion 1 157, pinion 166, hull gear 16 an all moving in the direction of the netted arrows, will operate to move shalt 14 1 put in active connection with the clutch shaft through clutch unit A, pinion 14:9, gear 149 pinion 155 and gear 157, the clutch shaft 24, through the train of gea s and the rack 16"? above described, niov b in the direction of the full line arrows, will operate to move the platen 18 at a very much slower speed in a forward direction.

Referring again to Figure 10 and assum ing again that the platen is moving in a re verse direction (as indicated by arrows in this figure) when the trip lug 88, mounted on the platen 18, strikes the finger 98, the lever 82 will be thrown from the full line position to the dotted line position, and the valve 67 moving to the extreme upper position, air will he exhausted from the clutch unit through the pipes 65, 63 and 61 and air under pressure will enter the clutch unit A through pipes 58, 54: and 52, At the same lid eet/ea time the air will be exhausted from cylinder chamber D through pipes 62, 63 and 58 and air under pressure will enter the chamber C and forcing the piston 103 to the oppositeend of the cylinder will through the rack T ar pinion 107, shaft 108 and crank connec tion to the segment 122,10wertherackbar128 to rotate the pinion 127. The ratchet device 129 will impart the rotating movement to the shaft 130, gear 131, pinion 132, bevel gears 133 and threaded feed screw 13 1 and thereby feed the block 135, carrying the cutting tools, a predetermined distance for a new cut. The width or depth of the out may be varied to any desired extent by adjusting the V-block 113 in the groove 112 (see Figures 14 and and thereby change the stroke of the crank pin 1141. It will be understood that either one or both of the feed screws 134: or 1&0 may be aetuated through their connection with the shaft 180 and actuating mechanism, by well known clutching means, not shown.

F or the reverse movement of the platen, only one comparatively fast speed is needed, but for the forward cutting movement it is very desirable to have different speeds for dilferent work and different materials Speed changes are provided for in the varying pitch diameters of the pinions and clutch shaft gears and means for shifting any one of the gears in mesh with a corresponding pinion, and preventing more than one gear set being in mesh at the same time. These means are preferably as follows: The pinions and gears, being divided into pairs of two each, a shifting rod .170 is provided for the pair of pinions and gears designated G and a similar rod 171 for the pinions and designated H. A forked arm 172 (see Figures 1 and 5) is fastened to the rod 170 and engages a grooved collar 178 on the gears G and a similar arm 17 1 is fastened to the rod 171 and engages a similar collar 175 on the gears 11. The rods having sliding bearings in the frame and projecting beyond the frame are provided with rack teeth 176 (see Figures 1, 6 and 7). A lever 17'? having a toothed segment 17 8 is pivoted at 179 in a yoke 180 pivotally supported for tilting movement by screws 181 on a stationary bracket 182. The bracket is provided with posts 183 and a gridiron plate 184 having longitudinal slots 185 and 186 and acentral cross slot 187 through which the lever 17'? projects, is fastened on top of the post 183. In the neutral position (see Figures 1 and 4) the lever rests in the central slot 187 out of contact with both shifting rods 170 and 171 and the gear pairs G and H are out of mesh with the pinions. By tilting the lever to one or the'other of the slots 185 or 186,.

the toothed segment of the lever may be brought into mesh with the tooth racks of one or the other of the slnfting rods and then by moving the lever forward or back ward the rods will be caused to slide in their bearings accordingly and bring one of the gears into mesh with the corresponding pinion. i

A spring lock bolt 188 having a beveled end for engagement with beveled slots 189 and 190 in the shifting rods keeps the rods in a fixed predetermined position. It is clear that by this construction only one pinion and gear can be put in mesh at the same 7 time and that before a selected speed change can be made the lever 177 must be returned to the central position, thereby sliding the engaged rod to neutral position and unmeshing the gears. When in this position the lock bolt 188 engages a slot 189 and locking the rod holds the gears and pinions out of mesh, after whichany speed change may be selected and executed by moving the lever 177. Proper identifying marks 191 corre sponding to the rate of speed are provided on the plate 184. Obviously by this con struction the speed of the work-holding platen is easily and quickly controlled while no interference or breakage can occur in shifting the speed-change gearing.

1 claim as my invention:

1. The combination, with a drive shaft and a single clutch shaft, of two fluid pressure operated clutches mounted on the opposite ends of said clutch shaft and geared to said drive shaft, a work-holding platen and an intermediate gearing between the middle portion of said clutch shaft and said platen.

2. The combination, with a drive shaft and a single clutch shaft, of twofluid pressure operated clutches mounted on the op posite ends of said clutch shaft and geared to said drive shaft, a work-holding platen and intermediate gearing between the middle portion of said clutch shaft and said platen, the clutch for forward movement having an indirect driving connection with said platen and the clutch for reverse movement having a direct high speed driving connection with said platen, and means alternately admitting a fluid pressure to said clutches.

3. The combination, with a drive shaft and a single clutch shaft, of two fluid pressure operated clutches for forward and reverse movement respectively mounted on the opposite ends of said clutch shaft, a workholding platen, an intermediate gearing be-. tween the middle portion of said clutch shaft and said platen, the clutch for forward. movement having a change speed driving connection with said platen and the clutch for reverse movement having a direct high speed driving connection with said platen, and means for admitting a fluid pressure to said clutches alternately.

4. The combination, with a drive shaft and a single clutch shaft, of two fluid pressure operated clutches mounted on the opposite ends of said clutch shaft, a WOl'lZ- holding platen and intermediate gearing between s aid clutch shaft and said platen, direct and indirect driving connections between said dive shaft and said clutches, and a valve actuated by said platen for controlling the movement of said clutches 5. The combination, with a reciprocating platen, of a tool carrier, fluid pressure actuated mechanism for operating said carriervertically and horizontally and means actuated by the movement of said platen for controlling said fluid pressur actuated mechanism.

6. In combination with a reciprocating member, clutches and associated mechanism mounted to alternately advance and retract said member, a vertically and horizontally movable tool carrier and a valv actuated by said reciprocating member for con rolling the operation of said clutches and the move ment of said tool carrier.

7. In combination with a (w member and a drive sh t, of clutch geared to said drive shaft a1 d to said member and mounted to be alternately seated to advance and retract said member, a tool car rier and mechanism mounted to feed carrier synchronously with the movement 0 said clutches and said reciprocating member.

8. The combination, with member mounted for forward and backward move ment, of a drive shaft, forward and reverse fluid pressure actuated. clutches geared to said drive shaft and said member, means for admitting fluid pressure to said clutches to alternately seat them and means comprising a sliding rod positi ely actuated by the seating of one clutch for unscating the oppo site clutch.

vertically and horizontally, am. means for controlling said fluid pressure actuating mechanism.

11. The combination, with member mounted for forward an backward movement, of a drive shaft, a hollow shaft adjacent thereto, clutches mounted on said hollow shaft and geared to said drive shaft and said member for alternately moving said member forward and backward, a rod mounted in said hollow shaft adapted when one clutch is seated to positively unseat the other clutch.

12. lhe combination with drive shaft and a clutch shaft, of clutches mounted on said clutch shaft and g to elf 1- l 'x 1 l A shalt, a work holding old. i r a t L *N A mediate gearing UQevvQQLI the tion of said clutch shaft and 1 The om nation widf a platen, of a tool on: er, ii actuating nice anisin connects tool carrier for rccipoocatingit of said platen, and mechanism ling the operation of said platen and. tool carrier.

member clutches and associated me ianis 'ernately i retrct tool pres ac uatod mechanism for oper Mid clinches moving said tool carri r,

valve act iated by said member and coni mechanism for simultane isl member and tal movement and means for of said clutches to retract said. member and simui eously retracting: said tool carrien 17. The combination, will reciprocating); member and a drive shaf f clutch-es gearet to the ends of said dri l at irtermcdiate point to said member and. mounted to be alternately seated to ac.- vance and retract said. member, a tool carrier, and a fluid pressure controlled mechmsm mounts l to "ier clironously of said clutches and i. i V caing meml er.

The combination, with a rficiprocatlng e siiaft, of ba t ant said member 1 to advance and remember and geared to said drive to be alternately seated tr: member, a tool carrier, a {it id pressure actua mechanism connected with said tool carrier for feeding it synchros ncusly with the operation of said clutches and the movement of said reciprocating member, and means including a disc and connecting rod radially adjustabl: thereon for varying the movement of said tool carrier.

19. The combination, with a reciprocating platen, of a tool carrier mounted to move vertically and horizontally with respect to said platen, a fluid pressure actuated mechanism connected with said carrier for moving it vertically and horizontally and means ac- J tuated by the movement of said platen for controlling the movement of said Fluid pressure actuated mechanism,

20. The combination, with a reciprocating platen, of a tool carrier, a fluid pressure actuated mechanism connected with said carrier for moving it with respect to said platen. means for varying the stroke of said mechanism and the degree of movement of said carrier, and means controlled by the movement of said platen for regulating the time of operation of said carrier.

21. The combination, with a reciprocating platen, of upper and lower tool carriers, a fluid pressure actuated mechanism operatively connected with said carriers, and means controlled by the movement of said platen for rendering said mechanism operative or inoperative.

22. The combination, with a reciprocating platen, of a tool carrier and rack bar geared thereto, a toothed quadrant meshing with said rack bar, a revolving disc, a rod connecting said disc with said quadrant for oscillating it to raise or lower said bar, a fluid pressure cont-rolled mechanism for revolving said disc, and means controlled by the movement of said platen for regulating the movement of said fluid pressure controlling mechanism.

23. The combination with a drive shaft, and a clutch shaft, of clutches mounted on said clutch shaft and geared to said drive shaft, a work holding platen, an intermediate gearing between said clutch shaft and said platen, the clutch for forward movement having an indirect driving connection with said platen, and the clutch for reverse movement having direct high speed connection with said platen, and means for alternately operating said clutches.

24. In combination, with a reciprocating member, forward and reverse clutches and mechanism associated therewith for operating said member, a tool carrier, a fluid pressure actuated mechanism connected with said tool carrier for feeding it synchronously with the operation of. said clutches, and a valve operated by said member for controlling said clutches and the movement of said tool carrier.-

25. The combination, with a reciprocating member, of a tool carrier, a fluid pressure actuated mechanism connected with said tool carrier and including a cylinder having means foradmitting fluid pressure to operate said tool feed mechanism alternately forward and back with the alternate stroke of said reciprocating member.

26. The combination, with a reciprocating member and drive shaft, of forward and reverse fiuid actuated clutches geared to said drive shaft and said member, said forward clutch having a change speed driving connection with said member comprising a pair of movable rods, each controlling two forward speeds of said member, and a lever mounted to engage either one of said rods to shift said change speed connection for either speed.

27. The combination, with a reciprocating member and drive shaft, of forward and reverse fluid actuated clutches geared to said drive shaft and said member, said forward clutch having a change speed driving connection with said member comprising a pair of movable rods, each controlling two forward speeds of said member, and a lever mounted to engage either one of said rods to shift said change speed connect-ion for'either speed, and a rapid traverse or backward driving connection unaffected by the chang ing of said forward speed.

28. The combination, with a shaft, of fluid pressure operated clutches mounted upon opposite ends of said shaft, one clutch being arranged to revolve said shaft in one direction and the otherclutch being arranged to revolve said shaft in the opposite direction, a reciprocating platen mechanism interposed between said clutches and connecting said shaft with said plate-n for moving said platen forward and backward at different speeds and a valve controlled mechanism for admitting fluid pressure to said clutches.

29. The combination, with a. machine frame, of adrive shaft journaled transversely therein, a clutch shaft parallel with said drive shaft and geared to one end thereof, fluid pressure operated clutches mounted on said clutch shaft and each having a member loosely mounted on said clutch'shaft and a member splined on" said clutch shaft for movement thereon toward and from said fixed members, one of said loosely mounted members having a direct gear connection with said drive shaft, the other loosely mounted member having an indirect driving connection with said drive shaft, a platen, and a gear transmission interposed between said clutches and eperatively connecting said clutch shaft with said platen. M

30. The combination, with a machine frame, of a. drive shaftjourna-led therein, a motor having its shaftgeared to one end of said drive shaft, a pinion mounted on the opposite end of said drive shaft, a clutch shaft in parallel relation with said drive shaft and having a clutch mounted on each end thereof and comprising loosely mounted and splined members, one of said loosely mounted members meshing with the pinio incshi with p said ca (9 H1 pinion mounted on said indi and meshing with the other ed member, a reciprocating transmission iechanisin clutch shart with said gearing connect said said clutch shaft,

chan e forward speed speed.

31. The combination, with a machine frame and a reciprocat ng platen mounted therein, of a drive shaft journaled versely of said and platen, a shaft mounted adiace t said drive sLa in parallel relati .1. i J ssure on clutches for said clutch shaft, eacl having loosely mounted member on said clutch shaft having direct indirect driv ing connections respectively with said drive shaft, the other members of said clutches being mounted for movement on said clutch shaft into out of engagement with saidloosely mounted members, and a gearin mechanism connecting said clutch shaft between said clutche with said reciprocating platen.

32. The combination, with a machine frame and a reciprocating platen mountec therein, of a drive shaft journaled transversely of said frame and platen, clutch shaft mounted. adjacent said drive shaft and in parallel relation, fluid pressure operated clutches for said clutch shaft, each clutch having a loosely mounted member on said clutch shaft having direct and indirect driving connections respectively with said drive shaft, the other mem of said clutches being mounted for movement on said clutch shaft into and out of engagement with said loosely mounted members, and a gearing mechanism, connecting said clutch shaft be tween said clutches with said reciprocating platen, a tool carrier,"fiuid pressure actuated Y mechanism for moving said tool carrier, and

means for setting the clutch to move said platen forward to feed said tool carrier.

33. The combination, with a reci ocating member and drive shaft, of forward reverse fiuid actuated clutches geared to said drive shaft and said member. said forward clutch having a change speed driving connection comprising mechanism for controlling two forward speed of said member, and a lever mounted to engage said mechanisin to shift said change speed connection for either speed.

34. lhe combination, with a reciprocating member and drive shaft, of forwar nd reverse fluid actuated clutches geared c said drive shaft and said member, said forward clutch having a change speed driving connecti comprising mechanism for controll we forward s ced of said member, a l nted to engage said mechanism to I ed connc ti n, witi a reci, i a tool carrier mounted for vertiho l a fhuc. presa tool mechanism connected 1 h said too tp usversely 0 ng a cyi;

nisrn. ion, with a reciprocating carrier, a fluid pressure ""ed to be actuated a prec ein the movement of said n, a pressure cylinder connected h said valve and having a piston, and s connecting piston with said col carrier to be actuated by the movement f said piston to advance or retract said 'ersely of said platen.

" bination, wi h a reciprocating pressure actusaid tool carincluding a cylinder having means i fluid. pressure to operate said col feed mechanism ali'zernately forward and mckward with the alternate stroke of said rater and transversely thereof, and means 263. varying the stroke of said tool feed mechanism and the feed of said carrier.

39. The combination, with a reciprocating platen and a drive shaft therefor, of for-w and reverse fluid pressure actuated clutches to said drive shaft and said platen, a tool carrier, a fluid pressure cylinder having; its piston operatively connected with said tool carrier and means for simuleously admitting fluid pressure to said reverse clutch and Cy .inder to traverse said platen and retract said tool carrier.

fi .-he combination with a reciprocating; and a drive shaft therefor, of forward and reverse fluid pressure actuated clutches cared to said drive shaft and said platen,

r, a fluid pressure cylinderhavits piston operatively connected with n 1 often, or tool valve arra said tool carrier. and means for simultaneplaten and drive shaft therefor, of forward and reverse fluid pressure actuated clutches geared to said drive shaft and platen, a tool carrier, a. fluid pressure cylinder having its piston operatively connected with said tool carrier and means for admittin fluid pressure to said forward clutch and said cylinder to advance said platen and feed said tool carrier to the work simultaneously.

42. The combination, with a driving shaft, of a clutch shaft, clutch members loosely mounted on said clutch shaft and geared to said driving shaft for continuous rotation, a gear operating pinion secured on said clutch shaft between said loosely mounted clutch members, clutch members secured on said shaft, clamping members having sliding connections with said fixed members and arranged to engage and lock said loosely mounted clutch members, and means actuated by the seating of one of said clamping members for positively unseating the other member.

43. The combination, with a driving shaft and driving pinions secured thereon, of a clutch shaft, clutch members loosely mounted on said clutch shaft and engaging said pinions, a pinion secured on said clutch shaft between said loosely mounted clutch members, a gear train operated from said clutch shaft pinion, discs fixed on said clutch shaft, clamping members interposed between said discs and said loosely mounted members: and having sliding clutching engagement with said discs and actuated by fluid pressure for locldng said loosely mounted members on said shaft, and means actuated by the movement of one clamping member for positively unseating the other member.

44:. The combination, with a driving shaft, of a clutch shaft, clutch members loosely mounted on said clutch shaft and geared to said driving shaft for continuous operation, a machine operating gearing between said loosely mounted clutch members and driven from said clutch shaft, fixed members at the ends of said clutch shaft, clamping members slidable on said clutch shaft between said fixed members and said loosely mounted members and actuated by fluid pressure for locking said loosely mounted members alternately and means actuated through the seating of one clampliJng member for unseating the other mem- In witness whereof, I have hereunto set my hand this 23rd day of October, 1919.

CONRAD M. CONRADSON. Witnesses:

O. N. ROY,

Bnssrn L. Room.

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