US1221594A

US1221594A - Machine for cutting plastic materials.

Info

Publication number: US1221594A
Authority: US
Inventors: William H Richman
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-06-05
Filing date: 1914-06-05
Publication date: 1917-04-03
Anticipated expiration: 1934-04-03

Description

W. H. RICHMAN.

MACHINE FOR CUTTING PLASTIC MATERIALS.

. APPLICATION FILED JUNE 5 I914- 19%219594w Patented Apr. 3, 1917.

2 SHEETS-SHEET I.

W. H. RICHMAN.

MACHINE FOR CUTTING PLASTIC MATERIALS.

APPLICATION FILED JUNE 5.1914. LQQL594Q Patented Apr. 3,1917.

2 SHEETS-SHEET 2 WILLIAM RICHMAN, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR CUTTING PLASTIC MATERIALS;

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed June 5, 1914. Serial No. 843,238.

To all whom it may concern:

Be it known that 1, WILLIAM H. RICH- MAN, a citizen of the 'UnitedStates, residing in Philadelphia, Pennsylvania, have invented an Improved Machine for Cutting Plastic Materials, of which the following is a specification.

One objectof myinvention is to provide a simple and substantial machine for cutting a-bar of soap or other plastic material into cakes'or pieces of definite length, the apparatus being adapted to automatically operatein connection with a plodder, whereby soap is delivered in a continuous length but at a speed which is generally variable.

Another object of'the invention is to provide a machine of the character indicated with novel means for supporting and maintainingits blades substantially perpendicular'to the line of movement of the material acted-on.

These objects and other advantageous ends 'I secure as-hereinafter set forth, reference being had to the accompanying drawings, in which;

Figure 1 is a side elevation partially in section illustrating my invention as applied to a soap plodder;

Fig. 2 is a rear elevation on a larger scale than Fig. 1, further illustrating my machine;

Fig. 3 is a vertical section on the line a-a, Fig. 2; an

Fig. 4 is an elevation of one of the cutting blades .andits associated parts.

As will be understood by thoseskilled in the soap-making art, the bar or length of soapis delivered from a-plodder at a varying speed, and it is, therefore, not feasible to cut this bar intolengths by means of a cutter driven at a uniform speed, because with such a device the soap would be cut into pieces of different lengths. -My machine, however, is so designed that its speed is dependent upon the-speed at which the soap travels andthis desired end is obtained by making the moving bar of soap serve as the operating; means for said. machine.

In the above drawings, lrrepresents the casing of a machine for forming soap or other plastic material into continuous lengths and-this is-shown as including a hopper 2 leading to a cylindrical chamber 3 is such that the center-line -:flanges 12 and so mounted in which is mounted a conveying screw 4 which rotates on a substantially horizontal axis. This screw operates Within the chamher 3, one of whose ends is forated die-plate 5 confined between the casing 1 and anozzle structure 6 whose chambeg1 tapers from the die-plate to its outlet en This structure is cooled by water suppli-ed to a Water-jacket 7 and its outlet end closed by a peris provided with a die-plate 8 in which is an opening 9 and which is held to the end of the nozzle structure by a clamping ring 10.

The arrangement of the above noted parts of the opening 9 ispreferably coincident with the axis of the screw 4 and with the center line of the chamber ofthe nozzle 6.

Connected-tothe lower front part of the die-plateSso as topermit of vertical adjustment relativelythereto, is a horizontally extending platform structure 11 having its edges formed with up\ ardly projecting that its top surfaceis at the same level as thelower edge of the opening 9 in the die-plate. The

guide-way'formedby this platform and its flanged edges isgreater width than the width of the dispreferably of slightly charge opening 9 and said structure has projecting laterally from it an extension 13 in which is fixed a vertically extending bar 14 hel'd'in place by set-screws 15.

structure 11, although they are respectively operative immediately outside the edges of the latter.

Mounted between the-side frames 20 are a series of cutters 21 inthe shape of rectangular blades having their lower edges relatively sharp and connected adjacent said edges to journals or spindles 22 respectively operative in bearings in said two frames. One journal of each blade has fixed to it a crank arm 23 whose center-line is substantially coincident with the plane of its blade '21 and whose outer end is provided with a projecting journal 24 rotatably operative in a bearing provided by a third wheel-like frame 25. This latter isrotatably mounted on a pin or journal 26 carried at the outer I end of the crank arm 18 at the same dis- 'tance from the center line of the shaft 17 as or other plastic material is delivered to the hopper 2 and the screw 4: is turned at a proper speed while cooling liquid is delivered to the water-jacket 7. In the case of the machine illustrated, the soap is drawn from the hopper 2 into the chamber 3 and from there is forced by the screw 1 through the die-plate 5 into the nozzle structure 6. The continuous delivery of soap into this structure causes it to be strongly compressed and united intoa single practically homogeneous body by the time it reaches the opening 9 from which it is delivered in a relatively stiff bar of rectangular or other section which'moves rearwardly, usually at a constantly varying speed, upon the table formed by the guide bracket 11. This bar shortly comes into engagement with the vertical surface of one of the knives or cutters 21 and its continued rearward movement through said knife turns the knife carrying frame on its supporting shaft 17. Ob-

viously the knife first engaged by the end of the bar has its cutting edge gradually forced toward the top surface of the table 11 until it is practically in engagement therewith when at the lowest part of its path of movement. In the meantime, the next succeeding knife is gradually lowered until its cutting edge comes into engagement with the top of the bar delivered from thenozzle structure 6 and as said bar is forced rearwardly upon the table the second knife is made to cut into and through it as the knife frame is turned. A definite length of material is thus cut and is forced along by the adjacent end of the plastic bar after the knife has reached its lowest point and has risen clear of said bar.

Obvioulsy, as long as there is a delivery of the soap from the orifice 9, the knife frame continues to rotate and the knives are successively brought into engagement 'tric frame 25 is likewise turned on the "crank-pin 26 and that in such manner that all of the crank arms 23 and hence all of the knives 21 are maintained in vertical planes at all points of their revolution. As a consequence of this, the knives are caused to make a clean cut through the plastic material which thus forms the motive power for rotating the knife-carrying frame and operating the knives.

If it should be desired that the machine cut bars of lengths different from that made with the parts arranged as shown in the drawings, then the journals 22 of the several knife blades may be placed in others of the holes 7 than the outermost ones. In such a case the journals 24 of the crank arms 23 would likewise be changed into the holes 28 of the eccentric frame 25 at the same distance from the center of the pin 26 as that of the journals 22 from the shaft responding distance, so that the cutting edge of each of the knives or blades will practically engage the surface of the table 11 as they are rotated.

Moreover, when it is desired to change the section. or dimensions of the bar delivered from the plodder, a die-plate 30, having an opening of the required shape is mounted between the delivery end of the nozzle structure and the plate 8 and clamped in place by the member 10. By loosening the nut on the bolt 31, the platform structure 11 may be adjusted so that its top surface is on the level of the bottom of the opening in this second die-plate 30, and said nut may thereafter be tightened to hold the parts in their given positions.

I claim 1. The combination in a machine for cutting plastic materials of a table; a rotary frame mounted adjacent thereto and having a series of bearings; a second frame mounted eccentrically to the first frame; a series of fiat blades having cutting edges; journals connected to said blades adjacent their cutting edges respectively and operative in the bearings of the first frame; and a series of crank arms respectively connecting the blades with the second frame.

2. The combination in a machine for cutting plastic materials of a supporting structure including a table; a standard; a shaft mounted in the standard, a rotary frame including two. side members mounted on the shaft; plates forming knives mounted at I their ends in bearings provided on said side name to this specification, in the presence members; a crank arm on the shaft; a crank arm connected to each of the knives; and a second frame mounted on said shaft-carried of two subscribing Witnesses.

WILLIAM H. RIOHMAN.

crank arm and connected to all of the knife Witnesses: crank arms. WILLIAM E. BRADLEY,

In testimony whereof, I have signed my WM. A. BARR.

Copies (if this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.