US1760999A - Timing mechanism for glass feeders - Google Patents

Description

June 3, 1930.

o. TUCKER ET AL TIMiENG MECHANISM FOR GLASS FEEDERS Filed June :50, 1920 5. Sheets-Sheet 1 Quorum;

June 3, 1930.

o. M. TUCKER ET AL TIMING MECHANISM FOR GLASS FEEDERS Filed June 50, 1920 5 Sheets-Sheet 2 vJune 3, 1930. o, TUCKER El AL TIMING MECHANISM For? GLASS FEEDERS Filed June 30 1920 5 Sheets-Sheet FIG 5 H ZW attain;

June 3', 1930. o; M. TLIICKEIR ET AL 1,760,999

TIMING MECHANISM FOR- G LASS FEEDERS Filed June 30 1920 e 5 Q 6 m e f;

( g m s; I k W mu I, um i v 6 w 0 0 ZVVENIOIR. M m. W

A TTORNEY.

Patented June 3, o i

UNITED] srArEsrArENT. OFFICE or-Ivnr. isobar: Amirm'r nuiwisjorconuunus, enrol AS- SIGNOBS, BY MESNE"ASSIGNMENTS, .lO. HABTI'OBDJEMPIRE COMPANY, OF EART- FORD, CONNECTICUT, GORPO RA-TION'OI' DELAWARE v ammo mncn'amsu roa Grass ran-Dans Application filed June 89, -1920, Seria1 No. 892,918. Beneuied February 21,. 1827,.

Our invention relates to timing mecha-' I 'nism for glass feeders and has particular ref erence to the provision of an automatically operating apparatus which is regulable to take care of practically all conditions which occur or are likelyto occur in the feeding of viscous glass. It relates particularly to that type of device wherein the various parts of the glass-feeding device-are operable by air underpressure and-contemplates the pr0- vision of automatic means for regulating the application of such air underlpressure to cylinder and piston elements wh ch contr'ol'and 4 operatethe various elements, of the feeding device The present dev1ce 1s an improvement 1 upon the .tlmmg mechanism shown and described in our application filed September 16,1916, Serial No. 120,429. The cylinders and pistons designed to be actuated under control of the timing mechanism shown here.-

' in are the same in principle as the cylinders and pistons which are shown in conjunction with the timing mechansm in the above-mentionedapplication, although the type of shear-actuatilf' cylinder and piston con struction whic is shown in an executed on June 26, 1920, and ed in the i Patent'Oflice immediately thereafter is the preferred type of sheer-actuating mechanism that we use in conjunction with the present form of timin mechanism. It be understood that t is timing mechanism may be utilized with various forms of feeding de- ;vices, however. a

By referring to application Serial No.

7 120,429 .it will be seen that the pistons which actuate the several movable units or elements ofour feeder are difierential. area. pistons and that constantair pressure is applied to one area of each 'piston to maintain the par-.

ticular-element in a given position while air.

Y move, h sures causing 4 I p I D at proper times. These ropertlmes are. de

pressure is intermittently applied to-a larger area'of each piston so as to overcome the con stant pressure air and cause the piston to these constant and intermittent prestermined and controlled v y the timeiidr the reason that the gpplication actuation of the difierent units tor of themachin'e could by rotating them or any one offthem cause them to get out ofproper timing relation. In' the present timing mechanism with the reciprocable valves{ 1 the manual adjustment can only be eifecte temporarily by an. operator because if the operating valves are manually manipulated so as to'produce an improper timing, this will automatically be corrected upon the continued'o eration of the timingmechanismi A furt er important advantage of the pres- .ent timing mechanism is that means are rovided for varying the time of starting 0 the press with relation to the time of drop of the charges. Thus, with some charges; it is V desirable to allow theglass'to remain in the mold for a longer period of time than it is with others. We have provided a means for regulating the time of trip-ofi of the press 'during the continued operation of the machine and without the necessity for stoppingv any part'thereof.

We have also provided a novel form v of air lock which" operates to ositively hold the valves raised after they ave once been.

raised, regardless of whether the machine continues to operate or not, untilthe con:

tinud operation of the machine positively actuate's' mechanism designed to bring about dro ping of thevalve.

- are are many other mechanism, such as a conserving of the air 9 The preferred embodiment of .our mm.

features of advantage ar smg from our novel form of timing utilized and a proper lubrication of the'jparts of thetim'ing mechanism. These fea-' 'tures appear as this description prog-f I v tion is shown in the accompanying drawings wherein similar characters of reference designate corresponding parts and wherein:

Figure 1 is .a top plan .view of our. automatic timer.

Figure 2 isa partial vertical longitudinal section on line 2- -2 of Figure l.

Figure 3 is an end elevation of the structure shown in Figure 2 showing a form of 'Figure -5.

b Figure 7 is a top plan view of the valve ase. 1

Figure 8 is 'a bottom planview of the valve a plurality of cam plates 8.

" plurality blocle Figure 9 is a vertical section taken approximately on line 9--9 of Figs. 7 and 8' and also showing avertical longitudinal section through the left head and a portion of the timer. i

Figure 10 is an enlarged sectiontaken approximately on line 9-9 of Figure 7.

Figure ll is a section taken on line 1111 of Figure 10.

Figure 12 is a vertical sectional view diaammatically illustrating one form of glass eeder units .comprising a combustion cup and shear structure and also showin cylinder structure for operating the com ustion cu I , hn the drawings, there is shown a timer box 1 supported upon a suitable standard'2.

The timer box has its ends closed by circularheads 3 and 4, while near the center of, the

timer box there is provided a hollow transverse partition which is.normally partially filled with oil for the lubrication of some of the parts contained within the timer box, this chamber being designated 5.

The heads '3 and 4 and the walls of the chamber hare fitted with bearin so as at 6, within which is journaled a shaft carrying These cam plates 8 are fastened to the shaft 7 by means of set screws 9. The shaft 7 also carries a I of cam plates which are loose upon the shaft. a

The shaft 7 likewise carries a singlecam plate 11 fastenedthereto with set screws 9, this cam plate 11"being shown (Figure 2) 'near the right-hand end of the shaft The shaft 7 is driven from a source of po'werby any suitable gearing and is shown as being.

driven from a. variable speed motor 12, through a shaft 13, worm and worm wheel, respectively designated 14 and 15, the worm wheel being mounted upon shaft 7.

,The cam plates 8 and 10 are in airs and carry gears 16 upon their opposmg faces.

' pin 18 carried by ablock 19.

These gears 16 are in mesh with pinions 17. Each pinion 17 is mounted upon-a depending This block 19 is fitted upon the shaft ,7 and this shaft 7 turns therein.

The ends of the pins 18 extend into the ends 'of a yoke member 20 so that the pinions upon the two adjacent pairs of cam plates 8 and 10 may be adjusted in unison.

The adjustment of this yoke member 20 to regulate the position of the pinions and the consequent relation of the cam plates is rendered possible by the provision on the yoke of two depending spaced lugs 21 which are drilled transversely for the reception of a 'swivel pin 22. This swivel pin 22 is likewise drilled transversely and is threaded for the receptionof a hand-operated screw such as is shown at 23 in Figure 4:. The pin 22 is so fitted that it will turn freely in the lug 21 and the threaded rod is shoulderedas at 24 in. Figure 4. Beyond this shoulder, this screw rod is reduced, as at 25 and passes through a transverse hole such as 26 in the pin 27(-Figure 4) The handle for manipulating the screw rod for these particular pairs of cam plates desirably take'the form of a hand wheel 28 rigidly secured tothe screw ,rod and separated from the flattened surface of such a pin as 27 by means of spring washers such as shown at 29 in Figure 4. This constructionv permits of a ready regulation of the position of the yoke 20 so as to alter the position of the pinions and to consequently alter the relation of the rigid and loose cam plates-with relation to each other. Thus by turning the hand wheel 28, the yoke, 20 and consequently the pins 18 will be given a concentric motion around the shaft 7 Furthermore, the swiveled pin 27 permits free movement of the yoke member.

The camplates are of circular form and are provided at determined intervals around their edges with apertures 8 (see Figures 9 and 11) for the reception of pins 30 threaded plates. However, a slifficient number of holes or apertures are. provided to permit of any necessary adjustment and these holes are so located that the edges of the rollers will prono I for the reception of,nuts 31 and provided.

ject beyond the periphery of the plate to cooperate withthe stems of po pet valves which are thus actuated to contro the. main differential area valves that in turn control the application of intermittent air to the cylinders whichgovern'the movable units of the feeding device. f 1

The differential area valves and their cooperative mechanism which operate the cylinders that move the flaming cup ofour feeder horizontally and .vertically are practically 5 identical, one valve structure being used for controlling the intermittent introduction of air under pressure to the horizontal cylinder and another being used for controlling the intermittent introduction of air under pressure to the vertical cylinder. The valves which operate the horizontal and vertical cylinders are "respectively mounted in casings 34 and35. The casing 34 and the mechanism enclosed thereby is shown best in Fig:

5 ures 9, and 11. This is the structure which controls the introduction of air under pressure to the horizontal cylinder and, inasmuch as this structure is substantially the same as the structure which controls the-introduction of air to the vertical cylinder, it will only be necessary to describe the structure shown in Figures 9, 10 and 11"with the understanding that the description will likewise apply to the structure contained within the casing 35. An

understanding of this'structure will be facilitated by the showing of the valvebase, in Figure 7, and by the bottom plan view of-t'he valve block in Figure 8.

Beferring'to Figure 12', 'a spout forming a impart of a glass feeder is designated 90 and is provided with a bushing and an aperture as 1s conventionally shown at 91 and 92. In

this figure a combustion cup 93. is shown.

positioned below the bushing 91 and is so mounted'as to be oscillated back and forth from a position below the bushing and also to be reciprocated at any time during .such

oscillation. The combustion cup is given vertical movement by the vertical piston and cylinder construction 94, and is given horizontal or oscillation movement by the horizontal piston and cylinder construction 95. In the form of cylinder shown in Figure 12 it will be noted that the pistons are differential area pistons. Constant pressure air is designed to be supplied to-one area of the piston in the'vertical cylinder 94 and intermittent air under pressure is introduced to the other area of the piston by means 'of the fluid operated valve structure mountedin the casing 35. -The' piston in' the horizontal cylinder 95;- is similar in. construction to the piston in cylinder 94 and the valve inthe casing 34 controls the introduction of air under pressure-to this horizontal cylinder. It will be understood that any suitable shear structure such-as 96 may be positioned beneath the feeder o. ific'e and may operated by horizontal cylinder and iston structure similar to the" structure shown -inthe cylinders 94 v and 95'. It will also be understood that air may be automatically introduced'under pres sureto this shear cylinder in the same manner as introduced into the combustion cupcylinders and that the proper time for the introduction of such air may be determined and controlled by the timer.

The casing 34 1s cons with two conical valves 37 and 38 and which carries a piston head construction 39 upon its base. I The valve 37 is designed to cooperate signed to cooperate with avalve seat 41. In between these valve seats 40 and .41 there is provided'a passage 42 which is connected at tructed to contain a difierential area piston 36 which is provided with-a valve seat 40 and the valve 38 is de--' its upper end to a pipe-43 that'leads to the cate the gears, rollers and pins of the timing mechanism. Oil becomes mixed with this exhaust air preferably by interposing a lubricatin device (not shown) in the constant air line not shown) which connects with the constant air inlet pipe 52. Obvlously, with this construction, the-intermittent air admitted to the: 'operating'cylinders and ex-' hausted therefrom through pipe 43, will carry shch oil in suspension.

Supplemental to this differential area valve piston we have provided poppet valves 46-and 47. These poppet valves, are pressed downwardly against their seats by coil springs 48 and 49 hearing in sockets provided therefor. These poppet valves are also provided with depending stems 50 and 51 which extend downwardly through the topof the timer box and. into juxtaposition to the cam plates 8 and 10 which are rotating in opposite direc tions '51 are so" the rollers 33 and 10.

Leading into is a constant livers air un or pressure to a chamber 53 abovethe valve seat 40 and the valve 37. This chamber 53 is provided with a bypass 54 leading downwardly to the poppet valve 47 In operation of this structure, the rotation of the plate ,10: brings its roller into contact with the-stem 51 of the poppet valve and this raises'the poppet valvefand permits a free carried upon the cam plates ,8

The lower ends of these stems 50 and located that-they will be elevatedby';

ile

the upper end of the casing 34 ressure air pipe. 52 which depassage of the 'air from'pipe 52 and chamber 53 through bypass-54 past poppet valve 47 Y and through duct 55 into the spacebeneath.

" the piston 39 of-the difi'erential area piston.

Until the *rais ing'of this oppet valve, the.

'difierential area piston has theconstant pressure air acting u n the -up-' n held down by 1 r end ofthe valve 37 in'the 'c amber53;

owever, the admission' of air tothe s'paee 56 below the difierential area valve serves to immediately overcome the pressure in the chamber 53 due to the fact that the area to which the air is applied upon the piston 39- is greater than the area of the upper side-of the valve 37. The result is that the piston 39. immediately moves upwardly and unseats the valve 37 at the same time seating the valve 38. Then the air under. pressure from chamber 53 passes by the valve 37, into the passage 42 and thence by way of the pipe 43 to the large area of the piston in the horizontal cylinder. In the continued operation of the timer,-the roller 33 on cam plate-8 comes into contact with the stem 50 of poppet valve 46 and raises this poppet valve from its seat. Immediately, the air within the chamber 56 is exhausted by way of passages 57 and 58, passing by the poppet valve and into the timer box. When this occurs, the differential areavalve immediately drops due to the pressure in chamber 53,- seating valve 37 and unseating valve 38. The result is that the pipe 43 and the passage 42 are connected to the passage 44 and to the exhaust ports 45 so that the air in front of the larger area of the piston in the horizontal cylinder is forced backward through pipe 43, passage 42 past valve 38 into passage 44 and-through exhaust port 45 into the timer box.

An additional feature of this differential area valve consists in the provision of means for maintaining the valve raised by what we have termed an airlock. It takes the form of a port 59 and a passage which leads from the passage 42 throughthe wall of the valve and into the space of chamber, 56. The result is that when the valve is raised and air is permitted to pass from the chamber 53 into the'passa 42 and thence to the pipe 43 aportion of t 's air enters the port 59 and passes through the passa e 60 into the space of chamber 56. T e air't us passing into the chamber 56 is cient to compensate for all leakage and to maintain suflicient pressure beneath the differential areavalve to lock it in raised position. However, the port 59 is of a lesser. diameter than the passage 57 so that when the poppet valve'46 is raised, the

air will exhaust with suflicient' rapidity, in

spite of the air being delivered to chamber 56 by the passage 60, so that the diflerential area valve will dro without delay.

' At the extreme rl ght-hand'end of theashafi 7 7 there is provided a cam plate and associated mechanism which has the combined function of controllin the operation of the cylinder and 'piston' w "ch operate e shears and of controlling the operation 0 the trip-0E cylinder which is common to most forming machines. The cam platehas been designated 11 I and' carries rollers 61 and 62 which are mounted thereon in the same mannei' as are fiiiiferential area construct-ion and the rollers 33 on the cam plates 8 and 10.

' ,valve is forced downwardlyby 1,7eo,eaa

shown best in Figures 4, 5 and 6. The knifeoperating cylinder and the mechanism associated therewith is of such a nature that acomplete reciprocation of the knife-operating piston follows each introduction of intermittent air to-the knife-operating cylinder for the reason that the knives are normally held open by constant pressure air, are closed when an im ulse of air from the timer is'admitted to t e control valve which trips the control valve and it in turn admits the intermittent air to the greater area of the piston, and are then again opened as soon as the cuttin action is completed by the automatic action of the structure of the shear-actuating mechanism as described in the aboveidentipressure is admitted from the constant supply pipe 66through the stop cock'67 .which been previously turned to permit of the passage of this air, past the valve seat and through the assage 68 into the pipe 69which is shownin igure 4 and which leads to the control valve of the shear. When this occurs,

the knives or shears move into cutting relation and then automatically reverse. v The mechanism for controlling the tripping oif ,or initiation of movement of the forming machine. is operated by the cam roller 62 n the cam plate 11. This cam roller is esigned to contact with and forcedownwardly the stem 7 0 of a poppet valve 71 which is normally held'against its seat by means of a coil spring 72. When this po pet cam roller 62 with the stem 0 the constant pressure air from the 'pipe 66 passes through contact 0 the I the assage in the stop cock 73, through the.

flexi le hose 74, -through the elbow 75, through the passage 7 6 past the poppet valve andthen through the passage 77 and flexible V hose 78 to a cylinder 7 1 and piston 71" construction which is common to present da formingmachines and which trips of suc fo machine 'after' each charge is dropped into a mold, I lihe form of tripping oif mechanism maybe varied, but in the form igure 3, the piston 71 ma beef aving applied to its shown in fluid pressure constantly t5 Also, holesare-provided around thecamplate smaller surface and intermittently applied tive any suitable mechanism such as electrical apparatus, levers, gears, clutch mechanism, a valve or valves et cetera, for unlocking or starting the shaping machine in motion, all of which, obviously, depends upon the construction of the particular sha ing machine employed, as is well recognize by those skilled in the art; The reverse movement of the piston 71 may be efiected by the rovision of a bleed port 71 in the cylinder ead 71, which permits the fluid on large face of the piston 71". to exhaust u on the closing .of valve 71. It is to be un erstood that thebleed port 71 is not of such siaeas to interfere with the movement of the piston 71 when pressure is admitted to its large face. Upon'the exhaust of fluid from the and 77 l are mounted and provide large face of the piston, the constant pres sure actin on its smaller face will moveit to the origma-l position (as shown) ready for the next operation in the succeeding cycle.

The poppet valve 71 and the passages 76 in an element? hichis swung from thebearing 6 and which comprises two sections 79 and 80 (see Figures 5 and 6). This element is angular in set'tion as shown in Figure 5eand immediately adjacent to the poppet valve is pro- *vided with a bifurcate portion 81 carrying a swivel pin 82 which is apertured as at 83 and which has this aperture 83 threaded for the reception of the screw rod 23 that has been already described. Rotation of this screw rod will serve to swing the dependin element 7 9 and its portion 80 about the aring 6. This will result in changing the position of the'poppet valve and its,stem 70 so that it will be actuated either sooner or later, dependiii upon the direction in which the screw ro is turned: Thus, by turning the handle 84 of this screw rod, the time of ac- 7 to maintain this member 79 properly space I from the cam plate 11 as at 88.

tuat'ionof the poppet valve and consequently the time of tripping off of the forming ma chine may be adjusted and thisadjustment may be effected while the glass feeder and the timin mechanism is in operation.

- 5 It will e noted that the'member 7 9 is. held firmly against the plate 4 by means of a screw pin 85 extending through a slot 86 in the plate 4 and pooperating with a leaf-spring- 87 that is placed between, the head of the pin 85 and the element 4. This structure is such as to permit of the re uisite movement of the member 7 8 about the caring-6 for all necessary purposes of adjustment'and it also serves f It will be understood that in tionof this invention the term forming mathe descripchine has been used for the purpose of facilitating description. It is intended to in clude presses, press-and blow machines, bottle machines, and, in fact, practically any type of machine capable of receiving a charge from a feeding device and forming this charge either wholly or in part.

The stop cocks 67 and73 are provided so.

that either the shears or the press or formmg machine may be cut out of o eration independently. However, it will be understood that in the practical operation of our device it is not'feasible to stop the operation of the shears without first stopping the operation of our flaming cup.

Having thus described our invention, what we claim is: v

. 1. In glass feeding apparatus, a diiferential area valve, a chamber for maintaining constant fluid pressure in contact with the from the said last-mentioned chamber to per-' mit return of the valve to normal position.

2. Timing mechanism for lass feeding apparatus comprising a fluid dlstributing valve mechanism, a differential valve for controlling the introduction and exhaust of fluid to .the driving units of the glass feeding apparatus, and a pair of cam plates 0 erating together to actuate said fluid distributing valve mechanism, the said cams being adjustable with relation to each other to vary the time of introduction and exhaust of fluid with rela- .tion to each other.

3. Timing mechanism forglass, feeding apparatus comprising means for intermittently supplying fluid pressure to the trip-01f cylinder' of a forming machine said means embodyin a poppet valve an a cam late, and means or -ad uSting the position 0 the poppet valve so as to vary operated by the cam plate. Y

4. Timing mechamsm for glass feeding the instant when is a, paratus comprising means forintermittently supplying fluid pressure to the shearstruc- .ture of 'the feeding apparatus and to the tripofi' means of a' formm machine, said means embodying poppetbva ves and a camplate, and means for adjusting the position of th'e' trip-ofl poppet valve g relative to; said cam plate.

paratuscomprising means for intermittently supplying fluid pressure to the shear structure of the feeding apparatu's andto the trip- 5. Timing mechanism for glasg feeding ap-l off cylinder of a'forming machine, said means embodying poppet valves, a cam plate and cam rollers thereon, said rollers being relatively adjustable of each other, and means for adjusting the position of the trip-off valve 1ndependently of said rollers 6. In combination with having,a plurality of movab e units with opv crating mechanism therefor, a source of fluid pressure, intermediate fluid actuated valves for automatically regulating the application of fluid to the operating mechanism of said units, and a series of cams for controlling theapplication of fluid to said valves whereby the application of fluid to said operating mechanism is regulated.

7. In combination with glass machinery having a plurality of movable units with operating mechanism therefor, a source of fluid pressure, intermediate fluid actuated valves for autuomatically regulating the application shiftin of fluid to the operating mechanism of said units, and a series of cams for controlling the application of fluid to said valves whereby the application of fluid to said operating mechanism is'automatically controlled.

. 8. In glass feeding apparatus, a differential area valve, a poppet valve to admit fluid under pressure beneath said differential area valve, a second poppet valve to exhaust fluid under pressure from beneath said diftion of an operating unit of such machinery,

a revolving member adapted to actuate said valve, means for supporting the rotary member and the valve, and means for shifting the valve in an arc concentric with the axis of rotation of the revolving member whereby the time of actuation of said valve may be varied. 1

11. In a timer mechanism for glass working machinery, valves controlling the operation of such machinery, a revolving member adapted to actuate said valves, means for support ng the rotary member and the valves,

and means, including an arcuate slot in said support ng means and clamp ng means associated therewith, for shifting one of said valves in an arc concentric with the axis of rotatlon of the revolving member and for alignmg the contact portion of said valve with the actuating portion of the revolving member, whereby the relative time of actua-"" lass machinery tion of the controlling valves may be varied.

12. In a timing device for the control of glass working machinery provided with fluid pressure operating means, a rotary element, a support therefor, a controlling valve mounted upon said support and adapted to; be moved in an arc concentric with the axis of rotation of the rotary element, an arcuate slot in said support, a clamping member associated with said valve and co-operating with the slot for determining the position of said valve, whereby said valve may be moved in the path of the rotary element to vary the time of actuation of said valve.

13. In a timing device for the control of glass working machinery provided with fluid, pressure operating means, a rotary element, a-

support therefor, a controlling valve adapted to be actuated by said rotary element and provided with flexible air connections to a source of fluid pressure supply and to an operating unit of the machinery, and means, including-an arcuate slot in said support and a clamping means associated with the controlling valve and. co-operating with said slot, for moving said valve concentrically with the axis of rotation of the rotary memher and ifrthe path thereof, whereby the time of actuation of said valve may be varied.

14. In a timer for controlling the movements of the'operating units of a fluid pressure operated glass working machinery, a

rotary actuating element, a support therefor,"

valves adapted to be actuated by said rotary element, so mounted on said'support as to permit changes in their relative angular positions about the axis of rotation of the rotary element, flexible air connection to one of said valves and means'fo'r moving one of said valvesrelative to another,- whereby the relative time of actuation of said valves may be varied.

1 5. In a timing device, the combination of a rotary shaft having contact members mounted thereon, a support for control elements provided with a bearing hub for the shaft, an operative control element rigidly mounted on the support and in the path of movement of one contact member, another operative control element movably mounted on the bearing hub, and means for adjusting the movable controlelement concentri'call with the axis of the shaft and in the path of movement of the other contact element to change the relative time of operation of;the control elements. i l/ 16. In a rotary timing "device for pneumatically operated mechanism, valves for controlling-the admission of fluid pressure to the .mechamsms, a rotary actuator member for periodically actuating the valves, a stationary support for one of the valves, a bear mg on the stationary support for the rotary member, a movable support for another of said valves, said movable support being wed es 17. In cbmbmationwith pheumatically operated glassworking machinery having a lurality of glassworking units, a source of ui-d pressure supply, a stationary valve for controlling the admission of fluid pressure to one unit, a' movable valve for controlling the admission of fluid pressureto another unit, flexible conduits for distributing fluid pressure to the glass making unit through'said valve, a rotatable member carrying separate contact elements each adapted to eriodically' actuate one ofthe valves, a bearing for supporting said moyable valve and said rotary member, means for swingin the movable valve in an .arc, concentric with the axis of the rotatable member to change its time of o eration and means for yieldably clamping t e support in the pathof one otv the rotatable contact elements 18. In a timing device, for glassworking machine the combination of valves for I transmitting fluid pressure to separate glassworking units, a rotatable member having con: tact members mounted thereon, said contact .members being arranged to revolve in different planes and each adapted to periodi; call actuate a valve, means for shifting one of t e valves man are concentric to the axis "of rotation of the rofiztable member-and in the path of movement of its contact-member, whereby the relative time between the actuation of the valves may be varied. I 19. ,In combination with pneumatically op- 40 erated glassworking machinery having a plu 'rality of units, afsource of fluid pressuresupply, valves for controlling the admission of fluid pressure to the glassworking units, a valve actuator associated with each valve, 9. 45 rotary member havingcontact elements for periodically engaging the valve actuators,

means for changing the time of operation of one of the valves, by moving said valve along the path ofiits contact element.

20. In combination with pneumatically operated glassworking machinery having a pl urality' of units, a source of fluid pressure, valves for controllin the admission of fluid pressure to each of t e glassworking units; 1

prov1ded with a pair of moving 0 ntact mema valve actuator associated with each valve, a rotary member having contact elements for periodically engaging the valve actuators, one of sa1d valve units-being mounted a concentrically of the-axis of said rotary meme ber, means for shifting the last named valve circumferentially of the rotary memberto.

: change the period of actuation. of th'e'valve,.- and a flexible air connection between the mov-v able valve and the source offluid pressura]; '65 21. In -a timing device-for glassworking machinery, the combination of valves/for transmittmg'fluid pressure to separate glass-, working units, a rotatable member havlng contact members mounted thereon and arranged to revolve in difierent planes and each-L adapted to periodically actuate a valve,

means for shifting one of the valves in anarc concentric to the axis of rotation ofthe rotatable member and in the path of movement of its contact member while the memher is rotating, whereby the relative time of the actuation of the valves may be varied during the operation of the glass working machinery.

2.2. Timing mechanism for glass feeding 8o apparatus comprising means for intermit-. tently supplying fluid pressure to the trip-oflf cylinder of a forming machine, said means embodying a valve and a rotary member, and means for adjusting the position of the valve 35 so as to vary the instant when it is operated by the said member. a

23. Timing mechanism for glassworking apparatus, comprising means for intermittentlysupplying fluid pressure to a plurality of operating units thereof, said means including a rotarymember and valve structure having a common axis, and means for varying the angular position on said axis of said valve structure.

24. Timing mechanism for glass feeding apparatus comprising means for intermittently supplying. fluid pressure to the. shear -structure of the feeding apparatus and to the trip-o'fl' means of a forming machine,said means embodying valves and a rotary actuator, and'means for varying the position of .the valve supplying pressure to the trip-oflf means.

25.- Timing mechanism for glassworking apparatus comprising means forv intermittently supplying fluid pressure to the shear structure of the feedin apparatus and to the trip-ofi' cylinder of a orming machine, said means comprising controlling valves,'a rotary cam plate and cam rollers thereon, said rollers being adjustable on the cam plate relative to each other and means for adjusting the position on itscam path of the valve supplying the tri -ofl cylinder, whereby the relative time o actuation of the valves may be varied independently of the adjustment of the cam rollers. ;f.' .j;5I--' 26. The combination 'with a "timing device bers, means for adjusting the relation between said contact'members a' 'fixed control element, a movable supportaindanother control-element-moun'ted thereon, each of said control. elements'being actuated by one of .said contacts,='whereb by shifting saidsupport the-.relative'timing 0f the two control elements-may be adjusted.

bers, a fixed control element, a movable support, a control element mounted on said support,each of said control elements being in the path of one of said contact members, and means for shifting said support to change the position'of its control element on the path of its contact member, whereby the timing of said control elements may be adjusted while the timing device'is in operation.

28. The combination with a timing device provided with moving contact members, a fixed support adjacent to the timing device, an operative-control element mounted on said fix'ed support and in the path of one of said contact members to be periodically actuated thereby, a second support movablymounted L said contact members to be periodically actu- D er by the relative timing of said elements.

m y b djusted. l

ated thereby, a second support adjacent'to said timing device, a second operative-control element mounted on said second support and in the path of another of said contact members to be periodically actuated thereby, and means for shifting said second support relative to the timing device whereby the relative timing of said elements maybe adjusted while the timing device is in operation.

30. The, combination with a timing device provided with moving contact members, means for adjusting the relative movements of said contact members,a fixed support adjacent to said timing device, an operativecontrolelement mounted on said'fixed sup-i port and in'the path of one of said contact I members to be periodically actuated thereby,

a movable support adjacent to said timing deviceyand. a second operative-control element'mountedon said movable support andin the path of another of said contact members to be periodically actuated thereby,

3l. -The cbmbination with a timing device provided With moving contact members,

7 means for adjusting the relative movements;

jof said contact members, afixed support adjacent to said-timing device, an operativecontrol element mounted on said-fixed support'and inthe path of one of said contact members to be periodically actuated thereby, a second support adjacent to said timing device, a second operative-control element" mounted on said second support and in the path of another of saidcontact members to be periodically actuated thereby, and means for shifting said second support relative to thetiming device whereby the relative timing of said elements may be adjusted while the timing device is in operation.

32. In a rotary timing device, the combination of revolving contact members, an opbination of revolving contact members, a

fixed support mounted adjacent to the device, an operative-control element mounted on said support and inthe path of one of said contact members to be periodically actuated thereby, a second support adjacent to said device and movable m an arc concentric with the axis of the ttiming device,

and a second operative-control element mounted on said second support in the path of another of the contact membersto be periodically actuated thereby, whereby the relative timing of said elements may be adjusted.

3-1. In a rotary timing device, the combination of revolving contact members, a fixed support adjacent to the timing device, an operative-control element mounted on said support and in the path of one of the contact members to be periodically actuated thereby, a second support adjacent to the timing device, a second operative-control element mounted on said second support and in the path of another contact member to be periodically actuated thereby, and means for shifting said second support in an are concentric with the axis of the timing device whereby the relative timing of said elements may be adjusted.

35. In a rotary timing device, the combination of contact members revolving in unison about a. common axis, means for ad justing saidcontact members about said axis,

an operative-control element fixedly mounted in.'the path'of one of said contact members to be periodically actuated thereby, and a second operative-control element mounted in the path of another contact member and movablein an arc concentricwith the 'path of its associated contact member whereby the relative timing of said elements may beadjusted.

36. In a rotary timing device, the combination of contact members revolving in unison about a common axis, means fer individually adjusting said contact members about an axis, anoperative-control element fixedly mounted in the path of one of said contact members to be periodically actuated thereby, a second operative-controlelement mounted in the path of another of said contact members to be periodically actuated thereby, and means for shifting said second element in an arc concentric with the axisof the timing device whereby therelative tim- I ing of the elements may be adjusted.

37. A timing mechanism for controlling the operation of pneumatically operated glass feeding apparatus, comprism a fluid pressure operated control-valve For controlling the introduction and exhaust of fluid pressure to and from the feeder, means associated with the valve for regulating the application -of fluid pressure to said valve so as to produce a desired periodic operationthereof, and a rotatable member for'controlling theoperation of the regulating means and adapted automatically to restore the periotrol valve.

dicity of the control valve should such periodicity be temporarily disturbed bya manual actuation of said regulating means;

38. A timing mechanism for controlling the operation of pneumatically operated glass feeding apparatus, comprising a fluid pressure operated valve, auxiliary vvalves associated with the control valve for regulating .the application of fluid pressure to said valve so as to produce a desired periodic operation thereof, and a rotatable member for controlling the relativetimes of the movements ofthe auxiliary valves so that manual operation of any of said auxiliary valves will'onlytemporarily disturb the periodicity of the con-.

39. A timing,mechanism for controlling the operation of pneumatically operated glass feeding apparatus, comprising a fluid pressure operated control valve,'auxiliary valves associated with the control valve for regulating the application of fluid pressure to said valve so as to produce a desired periodic operation thereof, and a series of cams for controlling the relative times of the movements I of the auxiliary valves so that manual operation of any of said auxiliary valves only temporarily disturb the periodicity of the control valve. v

In testimony whereof we hereby'aifix our signatures. c

- OLIVER M. TUCKER.

WILLIAM A. REEVES.

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