US1770646A - Press for molding soap and like plastic materials - Google Patents

Description

July 5 1930. H. H. HENNEQUIN 1,770,646

PRESS FOR MOLDING SOAP AND LIKE PLASTIC MATERIALS Filed March 26, 1929 5 Sheets-Sheet 1 e 1 1 v e-- 1:. t

1 s a: i: f. i,

July 15, 1930. 1,770,646

PRESS FOR MOLDING son AND LIKE PLASTIC MATERIALS H. H. HENNEQUIN Filed'uarch 26; 1929 5 Sheets-Sheet 2 W2 %GW "8;? 1 1 44 July 15, 1930. -H. H. HENNEQUIN ,77

I PRESS FOR MOLDING SOAP AND LIKE PLASTIC. MATERIALS 7 Filed March 26, 1929 s sheets-she t a LIIII Patented July 15, l fi HENRY HOLLAND HENNEQUIN, OF SEVEN KINGS, ENGLAND, ASSIGNOR TO YARDLEY & COMPANY, LIMITED, OF LONDON, ENGLAND PRESE FOE MOLDING SOIL? AND LIKE PLASTIC IMATERIALS Application filed March 26, 1929, Serial No. 350,065, and in Great Britain January 31, 1929.

This invention relates to presses for molding soap and like plastic materials and/or impressing the makers name or trade-mark on other matter t iereon, of the kind having a ram or plunger operated from a fly-wheel mounted upon afioating spindle through the medium of suitable linkage which connects the plunger and fly-wheel spindle and which is anchored at one part to the framework of the machine. Such presses as hitherto constructed have been operated by hand, the operator by means of a suitable handle turning the fly-wheel to depress the ram or plunger so as to press the cake of soap or the like be tween suitable dies or molds and the flywheel being suitably counterweighted so that it will automatically return to its initial position.

The object of the present invention is to increase the output of presses of the kind referred to and the invention consists in a press of the kind referred to combined with poweroperated means for the same. 7

The invention also consists in a press of the kind referred to having a friction wheel adapted to be driven from an electric motor or other prime mover and which may be brought momentarily into contact with the periphery of the fly-wheel (on depression of a treadle or operation of a suitable form of control member) to give the necessary impulse to the fly-wheel.

It will be understood that when the flywheel of the press of the character in question is rotated the fly-wheel and its spindle are moved bodily (about the centre at which the linkwork is pivoted to the frame of the machine) and the invention therefore also consists in providing a cam' surface on the periphery of the fly-wheel to compensate for this movement so that there will be no bind ing or braking action between the fly-.wheel and its operative friction wheel.

Further features of the invention will be apparent from the description given hereafter.

The accompanying drawings illustrate one convenient form of press in accordance with the invention.

Figure 1 is an elevation showing more or less diagrammatically the complete machine.

Figure 2 is an elevation of the actual press portion of the machine illustrated in Figure 1.

Figure 3 is a view looking towards Figure 2 from the left-hand side, While Figure 4c is a View looking towards Figure 2 from the right-hand side.

In carrying my invention into effect in one convenient manner I form my improved press somewhat on the lines of the usual construction of hand-operated presses of the kind referred to, that is to say, I provide a frame or support a to which is pivoted at b a link member I) carrying the spindle 0 of the fly-wheel (Z to which spindle there is secured a suitable link member e carrying a pin e working in a slot f in the upper part of the ram or plunger f, it being understood that the ram and bed-plate of the machine may carry suitable dies or molds adapted to suit the nature of the material being operated upon, the shape and size of finished mold ing or pressing, and any particular markings that it may be required to impress thereon.

It will be seen from Figures 1 to 4 that for purposes of symmetry the fly-wheels and linkages are duplicated although they have been described above as in the singular, it being understood that the duplication is preferred though not essential.

The mold or die parts (not shown) are carried by the ram and bed-plate respectively and when it is desired that the press shall be capable of dealing with straight sided tablets, the ram may also carry rods 9 which are adapted to support the collar or ring of the molds and which may be guided in the guide members g Such collar or ring is bolted on to the lower ends of the rods 9 and has a sliding action'over the top and bottom parts of the mold so as'to shear off the sur plus material, leaving a clean pressed straight side to the tablet. The rods 9 may be adjustable in position in the ram or plunger which is guided or any other suitable means may be adopted to permit of the rotary motion of the fly-wheel being converted into rectilinear movement of the ram or plunger.

For the purpose of enabling the press to be power-operated, I provide in association with one or each fly-wheel, a friction wheel 2', the surface of which may, if necessary or desirable, be covered with any suitable friction material, which friction wheel is arranged to be driven from an electric motor by belt and pulley mechanism or from any other suitable form of transmission mechanism. The friction wheel and its spindle and bearings are carried upon a movable bracket Z which may be controlled by the spring m and may be adapted to be moved on the depression of the treadle n by means of an adjustable link member 0 although it will be clear that such details are to be considered as given for the purpose of illustration and not of limitation since the sole object is to enable the friction wheel to be brought into contact with its appropriate fly-wheel and any other operative or control member with any other intervening mechanism may equally well be employed for the purpose. The arrangement is such that upon depression of the treadle n the rapidly rotating friction wheel is momentarily brought into contact with the periphery of the flywheel so as to impart the necessary impulse thereto in the proper direction for depression of the plunger, the direction of rotation of the friction wheel being suitably chosen for the purpose. As above indicated, however, and as will be evident from the two positions of the apparatus shewn in Figure 2, rotation of the flywheel will cause a bodily movement of the fly-wheel and of its spindle in a direction away from the ram or plunger, and unless suitable means were adopted to compensate for this movement there would necessarily be a binding or braking action between the flywheel and friction wheel which would entirely defeat the object of the latter. In the particular example illustrated this diiflculty is obviated by forming upon the periphery of the fly-wheel acam surface d which is so chosen that as the fly-wheel revolves so the cam surface recedes from the friction wheel in order to compensate for the bodily movement of the fly-wheel towards the friction wheel and thus maintain the frictional contact between the fly-wheel and friction wheel substantially constant during the time that such parts are actually in contact.

Alternatively, I may provide suitable means for moving the friction wheel or enabling the same to be moved automatically so as to follow the movement of the fly-wheel for the purpose of maintaining the contact pressure between the two substantially constant.

In view of the fact that the machine is thus arranged to be power-operated it is preferred to provide the machine with some suitable form of hand-guard in order to protect the hands of the operator from damage when inserting fresh tablets into the machine or otherwise attending to the same, and any of the existing forms of hand-guard may be adopted for this purpose, a suitable construction of scissors-guard being indicated at p in Figures 2 and 3 of the accompanying drawings.

If required any suitable form of conveyor mechanism may be provided in conjunction with the apparatus for the purpose of feeding the material to and/or from the machine and an adjustable seat Q may be provided for the operator.

It will be understood that by means of my improved power mechanism for presses of the kind in question the output of such presses will be enormously increased as compared with the output of the same press when handoperated, and I may vary the actual construc tion and arrangement of press, the means adopted to bring the power device into operation and the nature or construction of such power device depending upon any particular practical requirements that may have to be fulfilled.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. A press comprising a plunger, a floating fly-wheel for operating said plunger and power means for actuating said fly-wheel.

2. A press comprising a plunger, a floating fly-wheel for operating said plunger, linkwork connecting said fly-wheel and said plunger and power means for actuating said flywheel.

3. A press comprising a plunger, a floating fly-wheel for operating said plunger and power-operated friction means for actuating said fly-wheel.

4;. A press comprising a plunger, 2. floating fly-wheel for operating said plunger, a continuously rotatable friction wheel and means for momentarily bringing said friction wheel into contact with the periphery of the flywheel for the purpose of actuating the same.

5. A press according to claim 4 having means for maintaining substantially constant the pressure between the friction wheel and fly-wheel during the time that the two are in contact.

6. A press according to claim 4 having upon the periphery of the fly-wheel a cam surface which during rotation of the flywheel recedes from the friction wheel as the fly-wheel itself is moved towards the friction wheel in order to maintain the contact pres sure between the fly-wheel and friction wheel substantially constant.

7. A press comprising a framework, a plunger slidable in relation to said framework, a link pivoted at one end to said framework, a spindle carried at the other end of said link and carrying a fly-wheel, a link connecting said fly-wheel spindle and said plunger and power means for actuating said fly-wheel.

8. A press comprising a framework, a plunger slidable in relation to said framework, a link pivoted at one end to said framework, a spindle carried at the other end of said link and carrying a fly-wheel, a link connecting said fly-wheel spindle and said plunger and power-operated friction means for actuating said fly-wheel.

9. A press according to claim 8 having means for maintaining substantially constant the pressure between the friction wheel and fly-wheel during the time that the two are in contact.

10. A press according to claim 8 having upon the periphery of the fly-wheel a cam surface which during rotation ofthe flywheel recedes from the friction wheel as the fly-wheel itself is moved towards the friction wheel in order to maintain the contact pressure between the fiy-wheel and friction wheel substantially constant.

11. A press according to claim 8 having a spring-controlled bracket carrying said friction wheel and footor hand-operated means for moving the bracket against its spring in order to bring the friction wheel into contact with the periphery of the fly-wheel.

In testimony whereof I have signed my name to this specification.

HENRY HOLLAND HENNEQUIN.

Images