US121780A - Improvement in paper-pulp engines - Google Patents

Description

A1109.) I i Y zsh --sh JONATHAN HATCH. ee m' improvement in Paper Pulp Engines. d

N0. 121,780. 1 Patented Dec.'1v2,1871.

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JONATHAN HATCH. t t

Improvement in 'Paper Pulp Engines.

NO. 121,780. I Patented Dec. 12, 1871.

AM Pf/ara-urHas/uF/fgc :a ,v x fassa/riffs Means) UNITED STATES PATENT Orrrcn,

JONATHAN HATCH, OF SOUTH WINDHAM, CONNECTICUT, ASSIGNOR TO SMITH, WINCHESTER 81; CO., OF SAME PLACE.

IMPROVEMENT IN PAPER-PULP ENGINES.

Specification forming part of Letters Patent No.121,780, dated December 12, 1871.

To all 'whom it may concern:

Be it known that I, JONATHAN HATCH, of South Windham, of the county of Windham and State of Connecticut, have invented certain new and useful Improvements in Machines for Making Paper-Pulp, my invention having reference particularly to the well-known Jordon pulp-engine as exhibitedin Letters Patent No. 317, dated February 5, A. D. 1861, and granted to Joseph Jordon, Jr.; and l do hereby declare my said invention to be fully described in this my specification and represented in the accompanying drawing making part thereof, and of which- Figure l is a top view, Fig. 2 a side elevation, Fig. 3 a longitudinal section, and Fig. 4L a transverse section of the pulp-engine as improved by me. Fig. 5 is a top view of the male grinder. Fig. 6 is a horizontal section of the female grinder. Fig. 7 represents an end view of some of the blades or knives of the male grinder, with the i dovetailed grooved supporting-rib andthe wooden bars arranged between the knives.

This engine has the principal characteristics or members of that described in the aforesaid patent.

My improvements may be stated to consist as follows, viz.: In the male grinder as constructed with dovetailed grooved metallic ribs to receive the knives or blades, and with wooden bars driven between and iirmly against the knives and notched upon the ribs, all-bein g substantially as hereinafter explained and as represented in the drawing. Next, in the female grinder as constructed with internal and longitudinal ribs, and as provided with knives or blades and wooden voussoirs or arch-bars arranged and held between such ribs by a key or keys, all being essentially i as hereinafter specified and as represented in the drawing. Next, in the female grinder as provided with one or more pockets or chambers arranged to open out of its lower part for the purpose of intercepting any piece or pieces of iron, buttons or other foreign matters which, finding their way into the pulp-engine, would be likely to injure its knives.

I would remark that the drawing shows each of such knives as curved or beveled on that portion of its front end which extends above the iilling between the knives. This improvement, though shown, is not claimed by me as my in- Vention, it having been, as I am led to believe,

invented by Charles Smith, of said South Windham.

In the drawing, A denotes the male grinder, which in external form is a conic frustum. It is fixed on a driving-shaft, B, which extends axially through it and the female grinder or she C, which receives the male grinder in manner as represented and has its axis arranged horizontally or thereabout. The intercepting-chamber or pocket is shown at D as arranged at the lower part of the female grinder and opening out of the interior space thereof', such pocket being open at bottom and there provided with a slide or door, a, to enable a person to remove from the pocket at any time any foreign matter or matters which may have accumulated therein. The pocket, owing to its situation, will generally catch or intercept such matter or matters, thereby preventing any material injury to the knives being occasioned thereby. The body part b of the male grinder is a conic frustum provided with a series of metallic ribs, c, extending around it transversely both at its ends and at intervals between such. These ribs down to the outer surface of the body are formed with grooves extended through them rectilinearly and dovetailed in transverse section, they being to receive the knives or blades d, which have a corresponding dovetail form and are driven endwise into the grooves of the ribs. The intervals or spaces between the knives are filled to a suitable distance from the surface of the body of the grinder by bars e, of wood, driven firmly into such opening, and notched upon the ribs so as to rest in close contact with them and the knives, thereby affording an elastic support for the knives, which operates to prevent them from being broken by sudden lateral strains. Instead of supporting the knives or blades of the female grinder in curved sections or plates of metal arranged around within and tted to the shell or case, and fastened therein, as heretofore, I cast or construct the case j' with a series of ribs, g, extended longitudinally through it and to project from its inner surface. Between such ribs I arrange the knives or blades h at or about equal distances apart, with wooden voussoirs or arch-bars i disposed between the blades, each series of blades and voussoirs being fastened in place by a wooden key, k, driven between two of the voussoirs so as to crowd firmly together the knives and voussoirs and force both svrivs vlnsvlup against thv ahntmvnts or snstaining-rihs. This mntlv nl' applyingV and snpportingl thv ltnivvs admit.\l u1' thvir livin;l vasil)4 removed t'l'um thv l\hvll whvn it may hv dvsirahlv t0 rvplavv thvm with uthvrs.

Having thu` dvsvrihvtl my invvntinn. what l Claim as snvh in thv pnlp'vnginv as mvntinnvd may hv statvd as follows, viz.:

l. The malv grindvr as vnnstrnvtvd with thv dovetailvd Lrnavvd mvtalliv rhl v tu rvvvivv thv knives II, and with thv wtmtlvn har` tA drivvn hvA tween and against thv knivvy and nntvhvd npnn the rib c, all bving snhstantially as spvcitivtl and i 2. "he tvmale grinder as vonstrnctvd with thv i intvrnal and longitudinal rihs g, and as provided with thv knivvn` l1 and thv wvndvn vnnssnirs 01 arvhrhar 1' arrangvd and hvld hvtwvvn and hy snvh rihs by nnv/ or more kvys, lc, all hving substantially as vxplainvd and rvprvsvntvd.

I. Thv t'vmalv grindvras providvd with one 0r mmv intvrvvptingr-chambvr o1' pockvts, l), arrang'vd with it, vssvntially as and for the purpnsv dvsvrihvd, and the conlhinatinn of' .such

puvltvt n1' puvkv` with the malvl and female grindvrs, arrangvd as described 0r shown.

JONATHAN HATCH. \\itnvfsses:

A. S. WINCHESTER,

J. W. Tmm'rs, (108)

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