US1922959A

US1922959A - Knife oscillating device

Info

Publication number: US1922959A
Application number: US596886A
Authority: US
Inventors: Edgar B Kerst; Alpheus O Hurxthal
Original assignee: Proctor and Schwartz Inc
Current assignee: Proctor and Schwartz Inc
Priority date: 1932-03-04
Filing date: 1932-03-04
Publication date: 1933-08-15
Anticipated expiration: 1950-08-15

Description

8- 1933- E. B. KERST El AL 1,922,959

KNIFE OSCILLATING DEVICE Filed March 4, 1932 2 Sheets-Sheet 1 Ewen/Z5715.- 6 if 6 /742,715. I'IEPJfi ga -5%??? Aug. 15, 1933. KERsT ET AL 1,922,959

KNIFE OSCILLATING DEVICE Filed March 4, 1932 2 Sheets-Sheet 2 %W1u3 a g wu Patented Aug. 15, 1933 1,922,959

UNITED STATES PATENT'OFFlCE V 1,922,959 KNIFE OSCILLATING DEVICE Edgar B. Kerst and Alpheus 0. Hurxthal, Philadelphia, Pa., ass'ignors to Proctor & Schwartz, Incorporated, Philadelphia, Pa., a Corporation of Pennsylvania 7 Application March 4, 1932. Serial No. 596,886

8 Claims. (01. 18-15) This invention relates to devices arranged to spectively. The bearings 6 and '7 are adapted to chill and solidify plastic material, such as soap, rotatably and slidably support trunnions 8 and 9 in the form of a thin film or layer on a conprojecting respectivelyfroni the opposite ends of tinuously moving carrying surface, such as. the a blade carrier 10. i

peripheral surface of a chilling roll, where the Secured to and projecting below the carrier material is finally scraped from the roll in the 10 is the scraper blade 11, the weight of the carform of chips. rier 10 disposed at the opposite sides of the axes Heretofore it has been the practice to provide of the trunnions 8 and 9 providing the necessary a stationary scraper having a more or less resilweight to rotate the trunnions 8 and 9 within 10 ient contact with the carrying surface of the their bearings and thereby press the blade 11 into chilling roll and set at an angle with respect to scraping contact with the peripheral surface 3 the surface of the roll to scrape the material of the roll 2. from the roll as the roll is rotated with respect 'In the present instance the trunnion 8 is proto the scraper. vided with a cam followerin the form of a roller 15 In devices of this kind when the film of mate- 1 2, which is adapted to bear against a cam surrial on the surface of the roll is exceptionally face 13 arranged to move substantially with they thin, such for example as about 5/ 1000ths of an carrying surface 2 of the roll 1. In the present inch in thickness, required by soap manufacturers instance, the cam surface 13 is formed on one at the present time in order that the soapchips side face of a cam wheel 14 which is rigidly sewill dissolve instantly, the material, as it concured to a shaft 15 that is rotatably mounted tacts with the scraper, has a tendency to back in the bearing 6 below the trunnion 8 of the carup on the surface of the roll, thereby increasing rier 10. r the thickness of the film substantially twice its Also secured to the shaft 15 in the present innormal thickness before the material will chip stance is a sprocket 16 which is operatively con- 25 off the surface of the roll. a nected by means of a chain or belt 17 with a One object of the present invention is to elimsprocket 13 rigidly secured to one of the truninate the backing up of the material andthe connions 4 of the roll 2, so that as the roll 2 is rosequent thickening of the chips as the matetated the cam wheel 14.- will be correspondingly -rial is removed from the roll. rotated and through the cam surface 13 thereof The construction and operation of the mechaand the cooperating cam follower 12 on the outer nism forming the subject of the present invenend of the trunnion 8 of the carrier 10, said cartion will be fully disclosed hereinafter, referrier with the scraping blade 11 will be moved in ence being had to the accompanying drawings, one direction transversely of the peripheral surof which: face 3 of the roll 2 in opposition to a spring 19 3 Fig. 1 is a face view of a portion of a chilling confined within the bearing 7 in which the oproll with the mechanism of the present invenposite trunnion 9 of the carrier 10 is mounted.

tion applied thereto; One end of the spring 19 bears against a col- Fig. 2 is the sectional elevation taken on the lar 20 secured to the trunnion 9 while the opline 2-2, Fig. 1; posite end of said spring bears against an abut- 4 Fig. 3 is a view similar to Fig. 1, showing an ment 21 confined within the bearing 7. The alternative construction; and abutment plate 21 is adjustable axially of the Fig. 4 is af'transverse sectional elevation taken trunnion 9 and the bearing '7 by means of an on the line 44=, Fig. 3. adjusting screw 22 tapped into the outer end 23 In the accompanying drawings, the frame of of the bearing 7 and engaging the outer side of 45 the machine is illustrated at 1. The chilling the abutment plate 21. The spring 19 is adapted roll is diagrammatically illustrated at 2 with a to move the carrier loand the scraper 11 longifilm of material at carried by and adhesively contudinally and in a direction opposite to that protacting with the peripheral surface 3 of the roll vided by the cam 13 and the cam follower 12. 2. The roll 2 is provided with trunnions 4 which Moving the scraper blade 11 transversely of 50 are rotatably mounted insuitable bearings car-. the peripheral surface 3 of the roll 2, as the roll ried by'the side frames of the machine and no is rotated in the direction of the arrow in Fig. 2,. shown in the present drawings. provides a shearing action between the periph- Secured to and projecting upwardly from the eral surface of the roll 2 and the relatively bevside frames 1, 1 of the machine are

brackets

5, 5, eled edge of the blade 11, whereby the film as is no to which are rigidly secured bearings 6 and 7 resheared from the surface 3 of the roll 2, in place of face 3 of the chilling roll 2.

the surface of the roll prevents the blade or the surface of the roll from being worn in local spots, such as occurs with the non-oscillating blade, due to unequal hardness in various portions of the blade or of the peripheral surface of the roll with which the blade contacts.

In order to prevent excessive rotation of the blade carrier 10 that would possibly react to cause the blade 11 to jump or vibrate on the surface 3 of the roll 2, the trunnion may be provided with a pin arranged more or less loosely fitting and sliding in a groove or slot 26 formed in the bearing 6, such pin 25 having such a sliding fit in the slot 26 as to permit slight'rotation of the carrier 10 to press the blade 11 resiliently against the surface 3 of the roll 2 but preventing a reacting rotation of the carrier 10 that would cause. the blade 11 to be moved out of cooperating relation with respect to the surface 3 of the roll 2. This limiting of the rotation of the carrier 10 and consequently the'trunnion 8 thereof is desirable to keep the roller .12 in correct operative engagement with the cam surface 13 In'the alternative construction shown in Figs. 3 and 4 the blade 111 is clamped in the carrien 110 by means of a clamp plate 30 secured to the carrier 110 by means of bolts 31. The carrier is provided at one end with a trunnion 109 rotatably' and slidably mounted in a bearing 10"]. The opposite end of the carrier 110. is rotatably mounted on one end of a shaft 108 which is slidably mounted in a bearing 106 and prevented from rotating in said hearing by means of a key 125, the opposite end of the shaft 108 being provided with a-cam roller 112 riding between and adapted to be engaged at diametrically opposed points by substantially parallel cam surfaces 113 of a cam element 114. The cam element 114 is rotatably mounted on a stud shaft 115 rigidly attached to and projecting from one side'of the bearing 106. I 7

On the hub 114a of the cam element 114 is a sprocket 116 by which the cam 114 is rotated, the cam element being held against axial movement with respect to the stud 115 by the collars and 36 rigidly secured to the shaft 115.

Rotation of the cam 114 will cause positive axial reciprocation of the shaft 108 and consequently a corresponding reciprocation of the carrier 110 and blade 111 transversely of the peripheral sur- For this purpose and in order to permit free rotation of the carrier 110 with respect to the shaft 108 the said carrier is provided with a bearing into which projects 'and freely rotates the one end 41 of the shaft 108, said shaft having an axially aligned reduced portion e2 passing through an opening 43 formed 7 in an end wall 44 of the bearing 40 and provided outside the said wall with a collar i5, whereby longitudinal reciprocation of the shaft 108 will be transmitted to. the carrier 110, at the same time permitting. the carrier 110 to rotate freely about the shaft 108 while said shaft is held against such rotation by the key 125 co-acting with a correspondingly formed groove 126 in the bearing 106.

By this mechanism the spring 19in the bearing roll and rotatable therewith, a cam follower co- '7, which is arranged to move the carrier 10 in a direction opposite to that in which the carrier is moved by the cam surface 13, is eliminated and the blade carrier and the blade are moved positively in both directions by the action of the

cam surfaces

113, 113.

We claim:

1. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a scraper extending across and in contact with the carrying face of the roll, means for reciprocating the scraper longitudinally and relative to said carrying face to remove the material therefrom co1nprising a cam surface movable with the carrying surface, a cam follower cooperating with the said cam surface and operatively connected to the scraper to move the scraper in one direction, and resilient means for moving the scraper in an opposite direction.

2. The combination of a roll having a. peripheral surface arranged to carry a layer of material on and in adhesive. contact therewith, a knife blade extending across and in contact with the carrying face of the roll, a carrier for said blade, a trunnion at each end of said carrier, for rotatably and slidably supporting said carrier, a cam adjacent one side of saidroll and rotatable therewith, a cam. follower cooperating with said cam and operatively connected to said carrier for moving the blade longitudinally and relative to the carrying face of the roll, and means for rotating the carrier about the axes of said trunnions to press the blade against the carrying face of the roll under predetermined pressure. 1

3. The combination of a roll having a peripheral surface arranged to carry alayer of material. on and in adhesive, contact therewith, a

knife'blade extending across and in contact with the carrying face of the roll, a carrier for said blade, a trunnion at each end of said carrier, a bearing. for rotatably and slidably supporting each trunnion, a cam adjacent one side of the operating with said cam and operativelyconnected'to one of said trunnions to move the carrier and the blade in one direction longitudinally of. the blade, and resilient means cooperating with the other of said trunnions for moving the carrier and the blade in an opposite longitudinal direction.

4. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a knife blade extending across and in contact with the 1 I carrying face of the roll, a carrier for said blade, a

trunnion at each end of said carrier, a bearing for rotatably and slidably supporting each trunnion, a cam adjacent one side of the roll and rotatable therewith, a cam follower cooperating with said cam and operatively connected to one of said trunnions to' moventhe carrier and the blade in one direction longitudinally of the blade, and

resilient means cooperating with the other of said trunnions for moving the carrier and the blade in an opposite longitudinal direction and comprising a spring confined in the bearing for the last said trunnion between an abutment on the trunnion and an abutment in the bearing.

' '5. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a knife blade extending across and in contact with the carryingface of the roll, a carrier for. said blade,

a trunnion at each end of the carrier, a bearing for rotatably and slidably supporting each trunnion, a cam follower carried by and on the end of one of said trunnions, a cam cooperating with said cam follower to move the carrier and the blade longitudinally and elative to the carrying face of the roll, and A we" ht on the carrier tending to rotate the cartrier and the blade about the axes of said trunnions to press the blade against the carrying face of the roll under predeterminal pressure.

6. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a knife blade extending across and in contact with the carrying face of the roll, a carrier for said blade, a trunnion at each end of the carrier, a bearing for rotatably and slidably supporting each trunnion, a cam follower carried by and on the end of one of said trunnions, a cam cooperating with said cam follower to move the carrier and the blade longitudinally and relative to the carrying face of the roll in one direction, and resilient means cooperating with the other of said trunnions to move the blade and its carrier in the opposite direction.

7. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a knife blade extending acrossand in contact with the carrying face of the roll, a carrier for said blade, a trunnion at each end of the carrier, a bearing for rotatably and slidably supporting each trunnion, a cam follower carried by and on the end of one of said trunnions, a cam cooperating with said cam follower to move the carrier and the blade longitudinally and relative to the carrying face of the roll in one direction, resilient means cooperating with the other of said trunnions to move the blade and its carrier in the opposite direction, and a weight on the carrier tending to rotate the carrier and the blade about the axes of said trunnions to press the blade against the carrying face of the roll under predetermined pressure.

8. The combination of a roll having a peripheral surface arranged to carry a layer of material on and in adhesive contact therewith, a knife blade extending across and in contact with the carrying face of the roll, a carrier for said blade, a trunnion at each end of said carrier, a bearing for slidably supporting each trunnion, a cam follower on one of said trunnions, a double faced cam acting against opposed points on said cam follower to reciprocate the carrier and the blade longitudinally of and relative to said carrying face, means for preventing rotation of the follower carrying trunnion, and means for permitting rotation of the blade carrier relative to the last said trunnion.

EDGAR B. KERST. ALPHEUS O. HURXTHAL.