US2465321A - Multiple pressure press - Google Patents

Description

March 949- R. E. CAMPBELL 2,465,321

MULTIPLE PRESSURE PRESS Filed Aug 17, 1942 v g s Sheets-Sheet 1 INVENTOR. Kola/v Z? ("HM/5:44.

March 22,1949; R. E. CAMPBELL 2,465,321

' MULTIPLE PRESSURE PRESS,

Filed Aug. 17, 1942 3 Sheets-Sheet 2 INVENTOR.

March 22, 1949. R. E. CAMPBELL 2,465321 MULTIPLE PRESSURE PRESS Filed Aug. 17, 1942 r z Sheets-Sheet s F I'. B

. INVENT OR. R044 m5 ('HMPBELL.

Patented Mar. 22, 1949 Y S i NT FFICE '16 Claims.

This invention relates to a garment press of the type including a comparatively stationary buck and a complementary pressing head movable toward and away from the buck for pressing purposes, the head broadly having oscillating travel.

The present invention is directed to a press of the aforesaid general character and one wherein the head after being moved into buck engagement is then further actuated to apply increased head pressure to the buck and naturally the garment therebetween and on the buck.

The chief object of the present invention is to simplify the head connections to the power for opening and closing the press and reduce the number of parts heretofore necessary to effect the aforesaid sequential pressure application.

Another object of the present invention is to adjustably mount certain parts of the simplified structure whereby the desired pressures can be obtained therewith.

The chief feature of the present invention resides in the dual lever arrangement and dual purpose singular cam for effecting the desired action.

Another feature of the present invention resides in the adjustable arrangement supporting certain of the cam actuated parts.

Other objects and features of the invention will be set forth more fully hereinafter.

The full nature of the invention will be set forth more fully in the accompanying drawings and the following description and claims.

In the drawings Fig. 1 is a right side elevation of a press embodying the invention, certain parts being broken away and shown in section to show more clearly the same and other parts.

.Fig. 2 is a top plan of the head supporting mechanism, certain of the parts also being shown i section for the same purpose.

Fig. 3 is a front elevation of a portion of the buck element, and the head element impressin position, together with the head support, a portion thereof being broken away and some parts being sectioned, all for showing with greater clearness the actual head support structure.

Fig. 4 is a view similar to the upper portion of Fig. 1 with the parts in head and buck engaging or initial pressing position.

Fig. 5 is a view similar to Fig. 4 but with the same parts in final pressing position.

Figs. 6, 7 and 3 are views similar to the upper portion of Fig. 1 and Figse i and 5 showing the 2 parts of a modified form of the invention in corresponding position.

In the drawings It indicates in general a frame arrangement having a neck portion I l extending upwardly therefrom upon which is mounted a buck l2 suitably padded as at I3. Pivotally mounted at M on the frame is a fluid pressure cylinder it: having a piston therein carried by a rod 56 which is adjustably connected to a clevis ll pivotally connected in turn as at 58 to a pressure lever iii to which reference will be had more fully hereinafter. This last mentioned arrangement is the unidirectional power means for lowering the head toward the buck and for imparting additional pressing pressure thereto.

Mounted on the frame to is a shock absorber construction 20 which is regulated as at 2| and 22 by adjustable means and which is suitably connected by an adjustable link 23 as .at 24 to a rocker arm structure including a pair of spaced rocker arms 25 suitably connected together, see Fig. 2. This connection is intermediate the rocker arms as at 26. The rocker arms are also connected together as at 28 and are supported upon the pivot 29.

This pivot 29 is carried by a pair of spaced frame uprights lilabetween which are members 30 suitably connected together as at 3|, 3 2 and 33. .Shaft 29 extends through members 30. The lower end of the members 30 pivotally support a connection is which is threaded as at 35 and threaded therein i an elongated bolt 36 which mounts a stop nut 31 for limiting movement to the left of the member 36. Coaxial with the bolt 36 is a spring structure 38 which bears on the front of the frame II). There is mounted a'hand wheel 39 on the exposed end of the bolt structure 36. Hence, as the bolt is rotated clockwise, the bolt thread-s into the cross member 34 and serves to tilt the support structure clockwise and toward the left in Fig. 1 at its lower end.

When the hand wheel isrotated counterclockwise, the member 34 is forced to the right, away from the front of the frame structure in a like manner. Thus, the supportv 30 is adjustably mounted. It will be observed that the spaced support structure is between the pair of rocker arms, see Fig. 2.

The shaft 29 passes through and is supported by two uprights Illa extendng from (and a part of the frame. These uprights are on the outside of the dual rocker arm 25, see Fig. 2. When hand wheel 39 is rotated, support members 30, cross connected at 3i, 32. and 33, are rotated'upon shaft 2-9. During press operation, these members 3 30 remain stationary and may be considered as extension of frame It], because they are rigid relative thereto and to uprights Illa. Note shaft 29 supported in supports Illa constitutes a pivotal support for the members 25 and 30.

Secured as at pin 26, previously mentioned, there is a spring 48 which is connected as at its lower end to a hook 4| on the frame and it is connected, as stated, at its upper end at 26 to the rocker arm structure and by means of an adjustable connection 42. Hence, the force of this main power return spring 40 can be adjusted to that desired or required. It is a tension spring and when the pressing head structure, generally including the member l9 and the rocker arm structure, is tilted into buck engagement and the pressure which has been utilized to effect such tilting and pressing is released by means not shown, the entire movable structure is released to the force and effect of the tension spring, which has been elongated in the previous power movement, so that the spring returns the head structure to the elevated or open press position as shown in Fig. 1. The link 23 not only stabilizes the structure mounting upon the frame but also cushions the movement of the structure, both in closing and opening of the press through the double acting shock absorber 20.

As shown more particularly in Fig. l, the lever member [9 is extended forwardly from its pivotal connection l8 to the piston rod structure and the lever I9 is pivotally mounted on the member 43 which extends from one rocker arm to the other. 4 Referring to Fig. 3 momentarily, it will be observed that there is provided a pressing head 44 which includes studs 45 that extend upwardly therefrom and these are suitably associated with a plate 48 with which is also associated studs, or

. the like, 41, a pair of lock nuts bearing the sub- The c subscript nuts are the spring force adjusted nuts. The structures are opposed and hence, the head 44 is yieldingly mounted with respect to the plate 48 which has a vertically extending portion 46a through the instrumentalities of the inclined members 48, as shown in Fig. 3. Itwill be observed that the member l9 bears against the underface of the member 45asee Fig. 1.

The vertical plate 45a and inclined portions 48 are all one unit. Note the ball pivot 46. The pressure lever 18 transmits the pressing pressure to the head by ball pivot 45, which allows the head 44 to remain in a horizontal position, while the arm l9 makes its angular movement. Note there is no direct connection between rocker arms 25 and the head 44, for the head is suspended from the plates 48 by the nuts, studs and springs aforesaid. The lever l8 fulcrums on shaft 43 passing through the rocker arms 25 and its position relative to the rocker arms is controlled by the cam 56. Usually there is provided a housing Hill of thin material covering the several parts 45a, 46a and 41b, etc., and said housing (not shown, except in Fig. 3 wherein same is partly broken away) is affixed to the rocker arms 25. The housing is intentionally omitted in the views so other parts normally concealed thereby will be visible.

Extending upwardly from the member [9 is the arm 58. Threaded therethrough and substantially parallel to the linear alignment between the pivot 43 and the pivot I8 is the bolt locked in position on said bracket 50 by the nut 52. A follower head 53 is carried by said bolt and thus is adjustably mounted relative to the arm If! for movement toward and away from the respective pivots mentioned.

On a shaft 54 extending across the spaced support structures 38 is a roller 55 which in open press position is engaged by the follower 53, the latter functioning as a stop for limiting the opening movement or the press. In contact with the roller 55 at all times is a cam 56. This cam is adjustably and detachably mounted upon the pressure lever member I9 as at 51. This cam includes a closing face 58 and a pressing face 59. This cam is substantially triangular in shape with the base secured to the pressure lever IS. The face 58 is substantially inclined to the base and is of appreciable length. The pressing face 59 is substantially transverse to the base. Both of these faces are curved in outline and the curvature is convex.

The operation is as follows:

With the parts as shown in Fig. 1, fluid pressure is admitted to the lower end of the cylinder l5 and this causes the movement upwardly of the piston rod It. In this movement the cam 58 is effective upon the roller 55 so that as a result the pressure lever l8 and the rocker arm structure 25 are forced about the pivot 29 counterclockwise into pressing position wherein the pressing head 44 is in contact with the padded buck I2--l3. At this point the parts are substantially in the position shown in Fig. 4. Note that in this instance the several bolts connecting the head proper to the supporting structure thereabove are substantially perpendicular to the head and more particularly are parallel to the supporting neck I! and the connecting portions between the several supporting elements and the head 44 are perpendicular and parallel, as distinguished from being angularly directed, as shown in Fig. 5. Fig. 4 illustrates the relationship of the cam and roller such that the cam has just passed with respect to the roller beyond the closing face of said cam and the roller is then in contact with the initial portion of the pressing face or portion of said cam.

Continued upward movement of the piston rod incident to continued application of fluid pressure forces the lever l9 upwardly or counterclockwise about pivot 43, see Fig. 4, to a greater degree and in so doing the face 58 of the cam 56 becomes effective to hold the rocker arm structure 25 in a fixed position while permitting continued upward movement of the pressure lever 18 about its pivot 43 whereby increased pressing pressure is applied by the head to the buck and of course, to any garment on the buck. The continued upward movement of lever l9 about its pivot 43 from the position shown in Fig. 4 results in counter-clockwise rotation of lever IS with respect to rocker arms 25, as shown in Fig. 5. The cam 55, as illustrated, is arranged to hold the rocker arms 25 in a fixed position, although by altering the cam face 59 from a true radius the pressure ratio of the press, as a whole, may be increased or decreased.

Hence, it will be understood that during the upward movement of the piston rod IS, the closing face 58 of the cam is effective for moving simultaneously both the pressure lever l8 and the rocker arm structure 25 together with the head 44 and the connections therebetween, and continued movement upwardly of the piston rod I6 is effective for causing relative movement between the pressure lever l8 and the rocker arm structure so as to change the relationship-therebetween to efiect the extra pressure pressing by the head upon the buck.

When pressing interval has been completed, the fluid pressure to the cylinder I is released and thereupon the tension spring 40 becomes effective to return the parts to the position shown in Fig. 1, which is the open press position, parts passing through in a reverse manner, the preceding cycle from the position shown in Fig. 5, first, to the position shown in Fig. 4 and then to the open press position shown in Fig. 1. The pressure lever I9 returns to the position shownin Fig. 4 for two reasons. The springs 45b and 4112 are compressed when the press head and parts are in the position shown in Fig. 5. These springs tend to rotate the lever I9 upon the ball pivot connection to the head. In addition considerable pressure is built up in the padding,

consequently the padding tends to lift the head efiect and returns the press head and associated parts to open position.

It will, of course, be obvious that the rocker arm structure has a fixed axis pivotal relation with reference to the spaced support structure '30 but the adjustment of the latter through the hand wheel and bolt 36 shifts the position of the roller 55 relative to the cam 56 and hence. the position of the rocker arm prior to the time the cam becomes effective on its pressing side can be adjusted, relatively speaking. Also the amount of pressure applied on the head will, assuming there is no friction loss for convenience, be in the ratio between the length of the pressure lever between th pivot 43 and the point at which the cylinder I5 is connected as at I8 and the distance between the pressure pivot 43 and the point at which the head is pushed downward. As shown in the drawings, this is about a five to one ratio. so that the final pressure, by reason of the face 59, which is in the form of an arc concentric with pivot 43 operating on a lever I9, together with movement of piston and rod I6, will effect a final pressing force of about five times the amount of the piston force. As previously stated, adjustment of the parts through the hand wheel 39 will vary the position of members 30 and hence vary this pressure. This is attained by rotating hand wheel 39 clockwise or counter clockwise, which tilts members 30 upon pivot 29 to move the pivot of roller 55 forwardly or rearwardly as connection 34 is moved rearwardly or forwardly, respectively, and proportionately. Since lever I9 is pivoted at 43 and structure is pivoted at 29, for any given piston position, the cam face 58 or 59, as the case may be, is contacted by roller 55 at difierent positions and the result is a change of pressure corresponding to the aforesaid contact change. The timing further may be varied by adjusting longitudinally the cam 56 along the pressure lever I9. Such an adjustment may be of the character shown in the copending application, Serial initially herein, th -purpose of this invention is to obtain the dual sequential action specified by a structure that at the present time contains about one third the number of parts required to obtain the same results in conventional presses having the same broad objective of this invention.

In Figs. 6, 7 and 8 inclusive there is illustrated a modified form of the invention, the parts being shown in press open position, press closed light pressureposition and press closed maximum pressure position respectively.

Numerals of the one hundred series similar to the primary numerals herein designate parts identical, similar or equivalent to parts of the first form designated by said primary numerals. This second form of the invention mounts the cam I56 on member I54 instead of the lever H9 and the latter coaxial with pin IIB mounts the follower I55 adapted to engage cam faces I58 and I59 the former being the lowering portion and the latter the maximum pressure applying portion of said cam. Herein stud- I51 with spaced nuts I5Ia and I5'Ib adjusts the position of cam I56.

In this form of the invention in operation the cam does not move, but the follower position shifts with lever I I9 whereas in the pr or form the adjustably mounted cam 56 moves with lever H9 and the follower 55 is mounted on a fixed axis. Therefore, the twoforms broadly are the reverse of the other. The operation of the second form is substantially as previously described for the first form and requires no detail description.

While the invention has been illustrated and described in great detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character.

The several modificat ons described herein as well as others which will readily suggest themselves to persons skilled in th s art, all are considered to be within the broad scope of the invention, reference being had to the appended claims.

The invention claimed is:

1. In a press having a buck, a pressing head arranged to move toward and away from the buck for pressing purposes, a power means for moving the head toward the buck and other power means for moving the head away from the buck, the combination of a rocker arm operatively connected at one end to the head and at the other end to the second power means, a pressure lever arm'connected at one end to the head and at the other end to the first power means and pivoted on therocker arm, a support upon which the rocker arm is pivotally supported, and cam and follower means operatively interposed between said pressure arm and said support to restrain movement of said pressure lever arm with respect to said rocker arm, said cam means being responsive to movementof said rocker arm to a position near a final pressing position, to release said pressure lever arm for unrestricted movement by said first power means, and to restrain said rocker arm from any substantial further motion whereby final operation of the first power means imparts additional head pressure application to the buck through said pressure lever arm.

2. A press as defined by claim 1, characterized by the addition of means adjustably positioning a portion of the support for cam and follower means adjustment.

3. In a garment press and the like having a pressing member and a unidirectional source of power, the combination of a pivotally mounted rocker arm structure operatively supporting the pressing member, a pressure member pivoted on the rocker arm and connected at one end to the pressing member and at the opposite end to the source of power, cam follower means, and cam means having sequential follower engageable portions, a support for the rocker arm, the two cam and follower means being operatively interposed between the pressure member and the support, one of the follower engageable cam portions, upon initial application of unidirectional power moving both pressure member and rocker arm to dispose the pressing member in near pressing position and the other follower engageable cam portion upon final application of unidirectional power moving the pressure member relative to the rocker arm whereby additional pressing pressure will be imparted to the pressing member.

4. A press as defined by claim 3, characterized by the addition of an adjustable support for the follower means pivotally supported coaxially with the rocker arm.

5. A press as defined by claim 3, characterized by the cam means being substantially triangular like in shape with the initial operating portion generally appreciably inclined toward the base and the final operating portion generally being approximately perpendicular to the base of triangle outline, each portion being slightly curved and of convex character.

6. A press as defined by claim 1 characterized in that the cam and follower means comprises a cam portion and a follower portion; one of said portions having a relatively fixed position mounting, the other portion having a movable position mounting for adjustable mounting.

7. A press as defined by claim 1 characterized in that the cam and follower means comprises a cam portion and a follower portion; the follower portion having a relatively fixed position mounting and the cam portion having a movable position mounting for adjustable mounting.

8. A press as defined by claim 1 characterized in that the cam and follower means comprises a cam portion and a follower portion; the cam portion having a relatively fixed position mounting and the follower portion having a movable position mounting for adjustable mounting.

9. A press as defined by claim 3 characterized by the cam means being adjustably mounted upon the pressure member.

10. In a garment press and the like having a pressing member, and a unidirectional source of power, the combination of a pivotally mounted rocker arm structure operatively supporting the pressing member, a pressure member pivoted on the rocker arm structure and operatively connected at one end to the pressing member and at the opposite end to the source of power, cam means having segmental follower engageable portions, a support for the rocker arm, follower means operatively interposed between the support and pressure member, one of the said cam portions upon initial application of unidirectional power to said pressure member constraining same, rocker arm and pressing member into near pressing position, another of said cam portions upon final application of unidirectional power constraining movement of the pressure member without rocker arm movement whereby additional pressing pressure is imparted to the pressing member.

11. A press as defined by claim 10 characterized by the follower means being carried by the pressure member and the cam means being of elongated character and juxtapositioned thereto.

12. A press as defined by claim 10 characterized by the follower means being carried by the pressure member and the cam means being of elongated character and juxtapositioned thereto, said cam means being of adjustably positionable type.

13. A press as defined by claim 10 characterized by the follower means being of roller type and pivotally mounted on the pressure member.

14. A press as defined by claim 10 characterized by the follower means being of roller type and pivotally mounted on the pressure member, and coaxial with the power source connection thereto.

15. In a press having a frame, a buck supported thereby, a pressing head arranged to move toward and away from the buck for pressing purposes, power means for moving the head toward the buck, and other power means for moving the head away from the buck, the combination of a rocker arm pivoted on the frame,v a pressure lever pivoted on the rocker arm and connected to the first mentioned power means, the head being supported by said lever and movable into contact with the buck when the rocker arm and lever are moved by the first mentioned power means, and control means operatively associated with the lever and having a portion operatively carried by the frame, said control means operating cojointly upon and through the lever and rocker arm to initially insure movement thereof for head closing and thereafter relative movement therebetween in further operation of the first mentioned power means for final head pressing upon the buck.

16. A press, as defined by claim 15, wherein the control means comprises at least relatively movable portions and there is provided an adjustable support for one portion of the control means for adjusting the position thereof to vary the pressure of the head upon the buck in the final head pressing movement of the head for the same movement of the first mentioned power means.

ROLLIN E. CAMPBELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 953,805 Stratton et al Apr. 5, 1910 1,392,375 Waream Oct. 4, 1921 1,680,729 Davis Aug. 14, 1928 1,689,744 Neuroth Oct. 30, 1928 1,791,821 Locke Feb. 10, 1931 1,837,018 Davis Dec. 15, 1931 1,873,299 Davis Aug. 23, 1932 2,051,739 Page Aug. 18, 1936 2,116,143 Dewey May 3, 1938 2,175,127 Page Oct. 3, 1939 2,180,103 Engebrecht et al. Nov. 14, 1939 2,231,804 Forse Feb. 11, 1941 2,250,765 Johnson July 29, 1941 2,282,204 O'Brien May 5, 1942 2,307,686 Koepcke Jan. 5, 1943

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