US394594A - Stereotype-finishing machine - Google Patents

Description

2 SheetsSheet 1'.

(No Model.)

0. T. MURRAY.

STEREOTYPE FINISHING MACHINE.

No. 394,594. Patented Dec. 18, 1888.

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2 SheetsSheet (No Model.)

0. T. MURRAY.

STEREOTYPE FINISHING MACHINE.

No. 394,594; Patented Dec. 18, 1888 awuewtor MJWQ/ @51 9% Gummy,

qwi wmooeo fijm UNITED STATES PATENT OFFICE.

CHARLES T. MURRAY, OF KANSAS CITY, MISSOURI.

STEREOTYPE-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 394,594, dated December 18, 1888.

Application filed August 23, 1888. Serial No. 283,580. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES T. MURRAY, of Kansas City, Jackson county, Missouri, have invented certain new and useful Improvements in Stereotype-Plate-Finishing Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to machines used in the preparation or finishing of stereotypeplates of the several different forms; and it consists in the novel construction, combination, and arrangement of parts hereinafter set forth and claimed.

In the drawings, Figure 1 is a perspective view of my improved machine. Fig. 2 is an enlarged detail view in perspective of the shaving-knife carriage and its operative devices detached. Fig. 3 is an end view of the trimining-carriage and its attached adjustable gage, and Fig. t is a detail view of a toothed pinion and its attached pawl.

The supporting-frame, which may be of any suitable construction, is represei'ited by 100, while 200 is the table, which latter is elevated above the remaining portion, and upon which is mounted in proper bearings a double-ended arbor, 40, carrying an ordinary saw, E, at one end and a cutter-head, E, at the other end, which saw and cutter-head are obviously interchangeable as regards their location. A slotted saw-table, 42, is elevated still farther and located upon supporting-standards 43, projecting upwardly from table 200. This table is preferably provided with a hinge or hingessuch as i r.so that it may be turned back to allow access to the arbor and its attachments. A small pulley, 41, is also mounted on arbor t0 between its bearings, and the arbor is driven by a belt, 1+1, passing down through a slot in the table and around larger pulley, 13, carried by counter-shaft 10, which latter is journaled in bearings in lower part of frame 100. A driving-pulley, 12, is mounted on the projecting end of shaft 10, so as to be engaged by any suitable belt or other drivinggearing (not shown) to drive the arbor.

The trimming-carriage B is mounted upon two parallel slideways, B, with one end adjacent to cutter-head E, so that it may be reciprocated in a transverse direction thereto during the operation of trimming the edge of a plate.

Carriage B is provided with a longitudinal slideway, D, in the form of a dovetail in crosssection, and an adjustable gage, C, and its screw-bracket D are mounted on said slideway, so that the plate may be fed toward the cutter-head during the trimming operation. Said gage is adapted to be adjustably secured to said slideway I), according to the width of the plate to be operated on, by means of feedscrew a, which latter is threaded through the upper portion of the bracket and secured to rotate in the upper part of the gage, a lug, 0, being formed on the upper side of the gage, and said screw being threaded through it, as shown.

Hand-wheel I; is located on the outer end of screw a for revolving said screw, and a thumbscrew, 0, is passed through the lower portion of said bracket and engages one side of the dovetailed slideway to lock said bracket in any desired point of adjustment.

Formed in the table, and extending lengthwise thereof under the trimming-carriage, is a suitably-sized recess or depression, 300, in which are located the devices used for shaving the plates, which are constructed as follows:

I represents a raised platform located in the depression 300,1he top G thereof forming the shaving-table, and the edges of which are provided with suitable slideways, f. Mounted upon these slidewaysis the shavingcarriage 400, the side bars, F, of which are provided with slide-grooves 15, which latter engage corresponding slideways f on platform I, and with toothed racks f.

The shaving-knife F is mounted in the front end of carriage 400, and is made vertically adjustable with relation to table G by means of thumb-screws It, which latter are passed loosely through suitable projecting lugs on said carriage, and are threaded into said knife or lugs attached thereto. Said knife is provided with vertical slots 7, through which are passed set-screws S into the end of carriage 400, Fig. 2.

For reciprocatiu g the shaving-carriage upon its slideways during use, (which is accomplished by manual power,) a shaft, 6, is journaled in bearings across the depression 300 in a longitudinal direction and directly beneath said carriage, and is provided with toothed pinions f, which latter mesh with racks f on side bars, F. There is also a ratchet-wheel, g, and another toothed pinion, h, mounted on the outer end of shaft 6the latter loosely, so as to partially revolve, and the former rigidly, so as to revolve the shaft when it is turned, as will immediately be described.

H represents a hand-lever fulcrumed at a short distance from its inner end upon a pin or shaft, 2, projecting from the frame of the machine, so as to have an oscillatory vertical movement, and provided with a toothed segment, Z, at said inner end, the teeth of which latter mesh with the teeth of pinion h. Pivoted to the face of the pinion h is a suitable pawl, 3, (gravity or spring-actuated,) which engages the teeth of ratchet-wheel g, as will be described farther on.

A supporting-bracket, Al, in which the outer end. of shaft 6 has a bearing, is hung from the under side of the table 200 at one end, which of course may be dispensed with without affecting the operation.

To prevent the plates from being pushed oif the table G by the action of knife F, a raised strip or abutment, 5, is located on the upper surface of said table at its front end.

To protect the eyes of the operator from flying chips in using the tools located on arbor 40, a glass plate, d, is adjustably suspended over said arbor in any approved way.

The cutter-head E may be provided with angular cutters e, or with cutters of any suitable style for the work to be. performed by it. For instance, in some cases I may substitute saw E for cutter-head E, and vice versa, as the work to be done may require.

In grooving or coring out the under side of a plate I would locate a suitable cutter upon the end of the arbor, which the saw is here shown upon, or I may remove the saw entirely and locate another cutter-head in the place it is shown to occupy.

lVith this construction the operation is as follows: In cutting plates to different sizes the saw E is made use of in the well-known way,

its table 42 being capable of adjustment up and down, and also arranged to be turned back out of the way. In trimming the edge of a plate the cutter-head E is made use of, the plate to be trimmed being laid on carriage B and the gage O adjusted properly by turning feed-screw a to feed said plate toward the cutters. In shaving, the plate is laid upon table G and knife]? is properly adjusted by means of thumb-screws 7c, and the knife-carriage 400 is reciprocated by the depression and elevating of hand lever H. Upon depressing said lever the pawl" 3 is retracted over the teeth of ratchet-wheelg;wliile elevating said lever causes said pawlto engage said teeth and revolve said ratchet-wheel and shaft 6, which latter carries pinions f meshing with the racks on the shaving-carriage. After a complete stroke of the carriage has been made it is returned to normal position by first raising pawl 3 out of engagement with the ratchet-wheel and then pushing by hand, after which the pawl is released and immediately resumes its engagement with the wheel and is ready for another stroke. It will be observed that the shaving-carriage is thus moved intermittently by the action of the hand-lever, the operator having perfect control of the knife at every part of the shaving.

stroke.

A machine thus constructed is very compact, requiring little floor-space, and its effect iveness is readily apparent.

To more effectually permit the shaving operation to be accomplished, the trimming-carriage and its attached guide may be readily removed from the slideways B thus getting it entirely out of the way and permitting access to be had to, the devices locatedbeneath it almost as readily as if it were not a part of the machine.

Having thus described my invention, what I claim is- 1. The combination, in a stereotype-platefinishing machine, of the main table con-- strncted with a recess or depression, the raised platform provided with slideways and located in said depression, a carriage carrying a shav ing-knife and mounted on the slideways of said platform, the trimming-carriage mounted upon slideways above said depression in the table, and a rotary cutter-head adapted to trim the edges of a plate carried by said trimming-carriage, substantially as specified.

2. The combination, in a stereotype-platefinishing machine, of the main table constructed with a depression, the raised slideways located in said depression, a reciprocating shaving-carriage mounted on said slideways in the depression, the trimming-carriage mounted upon slideways above said depression in the table, an arbor mounted in bearings on the table and provided with a driving-pulley, a rotary cutter-head mounted on the end of said arbor that is adjacent to said trimming-carriage, and adapted to trim the edges of a plate carried by said trimming-carriage, a table mounted on the main table above said arbor, and a rotary cutting-tool mounted on the end of said arbor that is opposite said rotary cutter-head, substantially as specified.

3. In a stereotype-plate-finishing machine, the combination, with a reciprocating carriage provided with toothed racks, of a transverselyarranged shaft carrying pinions which mesh with said racks, a ratchet-wheel and another toothed pinion, also mounted on said shaft,

IIO

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES T. MURRAY.

\Vitn esses:

E. E. HIGDON, CHARLES E. SUTHERLAND.

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