US1910733A - Friction tile press - Google Patents

Description

May 23, 1933. FQ B. YINGLING 1,910,733

FRIcTIoN TILE PRESS Original Filed Aug. 1, 1927 5 Sheets-Sheet 1 Gttorneg May 23, 1933. F. B. YlNGl-.ING 1,910,733

FRIGTION TILE PRESS Original Filed Aug. l, 1927 5 Sheets-Sheet 2 1 Suventor @IWW Mmmm May 239 1933. F. B. YINGLING 1,910,733

FRICTION TILE PRESS Original Filed Aug. l, 1927 5 Sheets-Sheet 5 Sumntor Gttomeg May 23, 1933, F. B. YINGLING 1,910,733

FRICTION TILE PRESS Original Filed Aug. l, 1927 5 Sheets-Sheet 4 Bnvenfor @LM/WQ @w Gttorneg May 23, 1933. F. B. YINGLING 1,910,733

FRI CTION TILE PRESS `Original Filed Aug. l, 1927 5 Sheets-Sheet 5 lnvcntor Gttorneg Patented May 23, 1933 FRANK B. YINGLING, OF HAMILTON,

COMPANY, OF HAMILTON, OHIO FRICTION TILE PRESS Original application filed August 1, 1927, Serial No. 209,837. Divided and this application filed. September While the press of my invention is adapted for various uses, it is particularly designed for the production of tile or other ceramic articles and is especially applied to the manufacture of tile of special shape for ornamental use, as in trim. My invention involves the use of a press of the type employing a power operated vertically reciprocal plunger, and a lower die with -pedal operating mechanism for raising and lowering said lower die. Manually operated means are provided for controlling the reciprocal movement of the plunger, and means, automatically operated by the upwardly moving plunger, are employed for applying a brake to the friction driven member, and for holding the lattery while the plunger is in its top most position, after the friction drive members have been disconnected from the driven member, either by automatic action or by manually operated means. v

In the manufacture of specially shaped tile for ornamental work or trim, dies of greater depth are required than for the usual flat ware, and this required variation in the periphery of the upper die or plunger, is accomplished with facility by the use of the bevel friction drive mechanism of my improved press. A greater range of travel is also required for the die ring of the lower plunger to compensate for the deeper fill in the manufacture of special shapes compared with the manufacture of the usual fla-t tile, and this movement is accomplished by the use of the pedal operated mechanism forming the subject matter of my co-pending application, Serial lNo. 209,837,y filed August l, 1927, from which application this invention is divided which application has eventuated in Patent No. 1,758,772 dated May 13, 1930.

The tile of special shape are most etticiently produced by means of a pushing or squeezing action of the upper die rather than by an impact or blow from the plunger upon the dust in the mold, and this action of the press is secured by the bevel friction drive with a uniform speed of travel.

In the manufacture of shape tile, unusual Serial No. 303,491).

care and attention on the part of the operator are required in handling the pressed tile as they are lifted and removed from the mold or lower die, and for this reason it is vdesirable and practically essential that the knock-out be controlled by foot pedals. rIhus in the press of my invention, one pedal is employed to control the operating mechanism for raising or elevating the lower die ring, and another pedal is used for the purposeof lowering the elevated die ring. As the power operated upper plunger is controlled by one hand of the operator while the pressed tile are being extracted from the lower die under control from one foot pedal, the other hand of the operator is thus left free to take care of the finished article.

In making up what are known as shape or special tile, it is necessary that the excess dust be cut out of the die and a smooth even surface of dust be presented to the. descending plunger in order that the latter may impose a uniform pressure over the entire dust area. The long upward travel of the plunger carries the latter out of the way of the operator and provides ample space in which he may work in thus making up the tile in preparation for the working or down stroke of the upper plunger'. The working parts that control the die ring or lower plunger of the press are entirely enclosed to make them dust proof, and thus these parts are protected from unnecessary wear and tear.

In the accompanying drawings, I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I have so far devised for the practical application of the principles of'my invention. It will be understood however, that changes and alterations may be made in the exemplified structure, within the scope of my claims, without departing from the principles of my invention.

Figure l is a front elevation of a ceramic press involving the construction of my invention, showing the upper die or plunger in uppermost position at the end of its idle stroke; and with the brake applied;

Fig. 2 is a view in side elevation showing the manual operating lever in neutral or midway position while the plunger is in its uppermost position as in Fig. 1;

Fig. 3 is a detail view of the automatic trip device whichl is operative at the end of the upper stroke of the plunger todisconnect the drive mechanism and apply the brake to the friction drive mechanism;

Fig. 4f is a sectional detail view at line Ll--i of Fig. 3;

Fig. 5 is an enlarged horizontal sectional detail view at line 5 5 of Fig. 1;

Fig. 6 is a view showing the operating screw and connections of the press;

Fig. 7 is a detail sectional view of the means for longitudinally shifting the drive shaft' F 8 is a detail view showing the relation of the shifting sleeve and drive shaft;

Fig. 9 is a detail sectional view of the brake device for the driven disk of the drive mechanism Fig. 10 is a detail View as seen at line 10-10 of Fig. 9.

Fig. 11 is a detail view as seen at line 11-11 of Fig. 9, and

Fig. 12 is a sectional detail view showing the means for keying the brake sleeve to the brake shaft.

ln carrying out my invention, I utilize in the construction of the press a pair of posts 1 and 2 which are rectangular in cross section, and provided with lower threaded ends 3 that are inserted through openings in the two base members 4;, and nuts 5 are employed for securing the post in trie base members as indicated in Fig. 2. The base members are spaced apart the required distance and they are of sufiicient length to form a firm foundation or support for the machine, and at their upper ends these posts are joined by a head piece 6 and nuts 7 are employed on the threaded ends 8 of the posts, which threaded ends are passed through bolt openings in the head piece 6.

At the rear of the machine; a pair of spaced diagonally arranged brace bars 9 are used to connect the head piece and the base members, and these parts form a rigid supporting structure for the operating parts of the press.

At the top portion of the press, a transversely arranged drive shaft 10 is journaled in bearings 11 at the upper ends of the bearing supports or arms 6a; which arms are supported at the ends of the head piece 6. Power is applied to the shaft 10` through a pulley 12, and the shaft is provided with spaced beveled drive disks 13 and 14: for coaction with the horizontally disposed driven disk 15. The. drive disks 13 and 11i are designed for alternate driving contact with the driven disk 15 for imparting the downward or working stroke and the upward or idle stroke of the plunger or upper die of the press. The drive mechanism is controlled by either or both manually operated means, and automatically operated means, and mechanism is employed on the shaft 10 for shifting said shaft longitudinally in its bearings to engage one or the other of the drive disks with the driven disk. in Figs. 7 and 6, the details of construction of the mechanism for shifting the drive shaft are disclosed. A shifting sleeve 16 having a lining 17 is supported in one of the bearings 11 and encloses a portion of the shaft 10. The sleeve is provided with a slot 18 arranged tangcntially of its periphery; and this slot coacts with a pin 19 iiXed to and radially projecting from the drive shaft 10.

, in Fig. 7 it will be apnarent that when the sleeve 16 is turned anti-clockwise; the pin 19 will be caused to ride through the slot 18, and consequently the shaft 10 will be shifted to the left. Then a reverse movement of the sleeve will cause the shaft to be shifted to U the'right. At the end of the sleeve a thrust collar 20 is located on the shaft7 and an end collar 21 is also fixed on the shaft to limit the movement of the sleeve 16. T he sleeve is given a partial revolution or turn through the action of a lever 22 fixed on the sleeve by means of set screw 23, and this lever is turned through the action of the manual control lever 24.` which is retained in position by its bracket 24 as seen in Fig. 2. This operating lever 24 is pivoted on the operating .shaft 25; which shaft is supported in bearings fashioned on the bracket 26 that is supported from the front of the head 6. A lever arm 27 is secured on the operating shaft 25 and a pivoted link 28 connects this lever arm 27 with the lever arm 22 on the shifting sleeve 16. Thus it will be apparent that when the lever 24 in Fig. 2 is moved to the right or left; the driving shaft will be shifted to frictionally engage one or the other of the drive disks with the beveled driven disk, and the machine is thus manually controlled.

in the midway or neutral position of the lever 24C in Fig. 2; a brake shoe 29 is applied to the driven friction member, and this brake is always applied at the end of the upward stroke of the plunger. The brake 29 is carried at the end of the" brake shaft 30; as best seen in Fig. 9; and this shaft 30 is supported in bearings 31 of the supports 6a of the press. A spring 32 coiled about one end of the shaft 30 and interposed between a washer 33 'and one of the bearings 31, is designed to urge the brake shoe 29 out of contact with the driven disk 15, and means are provided for postitively shifting the 'shaft 30 to the left in Fig. 9 to apply the brake as illustrated. A brake sleeve 34 is lle locked to the shaft by an angular key 35, (see Fig. 12), and this sleeve moves longitudinally with the shaft 30 in the operation of the brake mechanism. A tension spring 36 is interposed between the sleeve 34 and a screw collar 37 that is threaded 0n one end of the brake shaft 30. rIhe tension of the spring may be varied by turning the screw collar, and the screw collar is then locked in adjustedposition by means of a spring bolt or spring pressed plunger 38 carried in a socket of the sleeve 34. The pointed free end of the spring bolt is adapted to engage one of a series of depressions 39 in the face of the screw collar 37, and a spring 40 at the rear of the bolt 38 holds the bolt in engagement with one of these depressions. rlhe brake sleeve 34 and the brake shaft 30 are shifted through the operation of a brake cam disk 41 which is stationary with relation to the shaft 30 and provided with a cam or cams 42. A cam disk 43 on the shaft is provided with cams 44 complementary to the cams 42, and this cam disk is fashioned with a rigid cam lever 45 to which is pivoted a cam rod. 46. This cam rod extends to a cam lever 47 on the operating shaft 25, and of course when the operating lever 24 is manually moved to control the driving shaft, the brake shaft is also controlled through these operative connections. The driving shaft and the brake shaft in addition to being under manual control, are also automatically controlled as will be described. rl `he upper member of the mold, or the plunger, comprises a cross head 48 which has at its ends V-shaped gibs 49 that slidably engage the squared portions 0f the posts 1 and 2 of the press, and the vertical reciprocal movement of the plunger is thus guided, the posts being provided with the usual liners 50 to reduce friction and consequentwear on the operating parts.

The vertical reciprocation of the plunger is attained through the use of a vertically arranged operating screw 51 which passes through the head piece 6 and the driven disk 15 as seen in Fig. 6. Between the disk and the head piece 6, a ball bearing 52 is arranged, and a bearing bushing 53 is included within the head 6. Beneath the head piece 6 the operating screw is provided with a circular head 54, and between this head and the lower face of the head piece a roller bearing 55 is interposed to facilitate the smooth operation of the driven member 15 and the operating screw 51.

r1`he operating screw of course is stationary, and it actuates the plunger through the instrumentality of an operating nut 56 which is carried in the cross head extension 57 that is bolted on the top face of the cross head 48.

The plunger carries the actuating device for the automatic control of the drive shaft and brake shaft, and the mechanism on the plunger coacts with a trip lever 58 secured on one end of the operating shaft 25. At the free end of this trip lever, a pin 59 is carried, and this pin coacts with a flat, oblong head 60 of a bolt 61 which bolt is retained in a socket 62 in the bracket 63 which bracket is bolted on the cross head extension 57. A spring 64 iscoiled about the bolt and interposed between the head 60 and the base of the socket to urge the bolt 61 into elevated position in Figs. 3 and 4, and this spring cushions the action of the bolt when it contacts with the finger 59 as the plunger reaches the end of its upstroke. As the head 60 contacts with the finger 59, it will be apparent that the lever 58 is turned to also turn the operating shaft, and from this operating shaft the connections are operated to control the driving shaft and the driven shaft as previously described.

The pedal control mechanism for the lower die is located below the die table 65 through which the lower bolt ends 3 of the posts 1 and 2 pass to the bases 4 of the press. The lower die ring 66 is supported on a pair of side bars 67 each having a dust guard as 68, and these bars reciprocate vertically with the lower die ring. The bars are guided in holes through the table top, and at their lower ends they arel connected by a cross head 69 within the hollow table 65. The die ring, the bars, rand the cross head, thus form a rigid vertically reciprocable frame, and this frame and the lower die are adapted to be elevated and lowered in the operation of the parts as set forth in my co-pending application. The actuating mechanism is enclosed in a housing 70 located below the table, and comprising two sections 7 0 and 71. These sections are bolted together and attached at the underside of the table 65, and they enclose the working parts of the pedal mechanism.

The left pedal 72 in Fig. 7 is adapted to raise the die ring 66, and the right pedal 73 is designed for the purpose of lowering the die ring, and of course these pedals are operated alternately by the left foot and right foot respectively of the operator. The pedal 72 is provided with a friction device including a brake 74 which is keyed on the pedal shaft 75.

A tension spring 76 for the pedal 72 is provided, and is coiled about a bolt 77 which is fashioned with a head 78 and projects upwardly into the hollow table 65.

In the operation of the press, with the plunger or upper die in topmost or uppermost position, the die table or lower plunger in elevated position, as shown in Figs. 1 and 2 of the drawings, the operating lever 24 is in neutral or midway position of its bracket 24. The operator deposits the dust or material upon the die plate of the die ring 66 ico of the lower die, and ample space is provided between the upper and lower members of the press for this work. The operating lever' 24 is shifted to the left in Fig. 2 to release the brake shoe 29 from the driven disk and to shift the drive shaft tocause frictional engagement between the drive disk 14- and the driven disk 15. The rotation of the driven disk causes the operating screw to turn within the traveling operating nut 56, causing the nut and its plunger to descend with a smooth and uniform squeezing or .pushing movement for its working or compression stroke.

The dust having been compressed to the tile shape, the operator swings the lever 24 to the right in Fig. 2 to disengage frictional drive disk 1li from the driven disk 15 and to engage disk 13 with the disk 15 to reverse the action of the operating screw and thus lift the plunger to uppermost position. Vhen the plunger reaches its uppermost position, it automatically trips the operating lever as described to shift the driving mechanism to neutral position and to apply the brake shoe 29 to the driven disk, thus retaining the plunger in uppermost position.

ln controlling the press, the operator is required to use only one hand and of course only one foot at a time and the lifting and lowering of the die ring or lower plunger are controlled by the pedals as described. rlhe control of the upper plunger is accomplished with one hand while one foot of the operator is being employed to cause extraction of the title from the die, which of course leaves the other hand of the operator free to take care of the finished tile.

Having thus fully described my invention, what l claim as new and desire to secure by Letters Patent is:

1. The combination in a tile press with driving mechanism including a shiftable drive shaft, a rotary driven member and a reoiprocable plunger operated from said shaft, of a brake for the driven member, operating means for the shiftable drive shaft and brake, and automatically actuating means on the plunger for the operating means.`

2. 'l'he combination in a ceramic press with a reciprocable plunger, driving mechanism therefor and a brake co-acting with the driving mechanism for the plunger, of an operating shaft connected with said driving mechanism and brake, a trip arm on the shaft, and a trip device on the plunger for coaction with said arm for turning the shaft for the purpose described.

3. In a tile press, the combination with a reciprocable plunger and driving mechanism therefor including a. longitudinally shiftable shaft, a brake device including a longitudinally shiftable shaft, operating means, operative connections between said operating means and said shafts, and means carried by the plunger for coaction with the operating means as described.

4. In a friction tile press, the combination with a vertically reciprocable plunger and operating means therefor including a rotary driven member, of a reciprocable brake shaft and a brake shoev thereon for co-action with the driven member, a spring for releasing the shoe, positively acting means for shifting the shaft to apply the shoe, and an adjustable tension device between the positively acting means and the shoe.

5. In a friction tile press the combination with a vertically reciprocable plunger and operating means therefor including a rotary driven disk, of a reciprocab-le brake shaft and a brake shoe thereon, a spring for releasing the shoe, a cam device rotatable on the shaft for applying the shoe, a slide sleeve on the shaft co-acting with the cam device, a brake sleeve threaded on the shaft and means for rotatably adjusting the sleeves and retaining them in adjusted position, and a tension spring between said sleeves.

6. AThe combination in a ceramic press with a vertically reciprocable plunger, an operating screw for the plunger, journal bearings for the screw, and a rotary driven disk revolvable with the screw, of a brake device for co-action with said disk, operating means for the brake device and driven disk, a trip arm included in the operating means, and a trip device on the plunger for coaction with said arm for actuating the operating means.

7. In a friction tile press, the combination with a vertically reciprocable plunger and operating means therefor including a rotary driven disk, of a reciprocable brake shaft and brake shoe thereon, a spring for releasing said shoe, a brake sleeve threaded on the shaft, a slide sleeve on the shaft and a spring between said sleeves, a spring pressed pin mounted in the slide sleeve for coaction with a series of depressions in the brake sleeve, a stationary cam disk on the shaft and cams thereon, a complementary rotatable cam disk between the stationary disk and the slide sleeve, and cams on the rotatable cam disk.

FRANK B. YINGLING.

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