US434039A

US434039A - Shaping-machine

Info

Publication number: US434039A
Authority: US
Publication date: 1890-08-12
Anticipated expiration: 1907-08-12

Description

(No Model.)

I 4 Sheets-Sheet 1.

J. M. WRIGHT. SHAPING MACHINE.

Patented Aug. 12,1890.

INVENTUR Mam WITN ESEES (No Model.)

7 4 Sheets-Sheet 2. J. M. WRIGHT. SHAPING MACHINE.

0 MWM/ 9 A w W Z 2 E v f m co, monrumo WASHINBYON, n, c.

I 4 Sheets-Sheet 3.

(No Model.)

J. M. WRIGHT. SHAPING MACHINE. No. 434,039.

Patented Aug. 12 1890.

, INVENTUR' I mzflw WITN ESEES (No Model.) 4 Sheets-Sheet 4.

' J. M. WRIGHT.

SHAPING MACHINE? N0. 434,039h Patented Aug". 12, 1890.

I V e i 2 l ,gl

WITNESSES iNVENTElR fiwxm UNITE STATES PATENT OFFicE.

' JAMES M. IVRIGHT, OF BROOKLYN, NEW YORK.

SHAPING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 434,039, dated August 12, 1890.

Application filed April 24, 1890. Serial No. 349,231. (No model.)

To all whom it may concern:

Be it known that I, JAMES M. \VRIGHT, of Brooklyn, New York, have invented an Improved Shaping-Nlachine, of which the follow ing is a specification.

This inventionrelates to various improvements in shaping-machines; and it consists in the features of construction more fully pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of my improved shaping-machine with the table removed. Fig. 2 is a front view thereof; Fig. 3, a vertical section through the table on line as :1 Fig. 2; Fig. 4, a section through the crossways on line y y, Fig. 2; Fig. 5, a side view of the clutch with the driving-pulleys in section; Fig. 6, an end view of the clutch; Fig. 7, a vertical central section through the friction-rocker; Fig. 8, a bottom View of the cutter bar or ram; Fig. 9, a top view thereof, and Fig. 10 a vertical longitudinal section through the shiftingbracket a.

The letter a represents the frame of the shaping-machine.

b is the cutter-bar, reciprocating backward and forward.

0 is the crossways, and d the table, alias usual. p

e is the power-shaft, provided with worm c, said worm engaging the worm-wheel f, keyed upon shaft f. To this shaft are keyed beneath the cutter-bar two worm-wheels g, that engage a pair of racks g, secured to the lower face of the cutter-bar. The usual intermittent revolving motion being imparted to the work-shaft, the cutter-bar will be moved toward and away from the work-table, as usual.

In order to secure an even and uniform sliding motion of the cutter-bar, I make the lower or working face of the racks g of con- Vex shape, being segments and having the curve of atrue circle and with inclined teeth, as shown in Figs. 2 and 9. The racks have convex teeth which are set at an angle to the longitudinal axes of the racks. A rack of this form should be used with a worm-wheel g, having a corresponding concave workingface. By this construction each tooth of the wheel will gradually overlap the corresponding tooth of the rack, thus moving the rack and cutter-bar with a smooth and uniform motion. ates the clutch that reverses the motion of the work-shaft.

a ct are two loose pulleys on the workshaft 6, revolved in opposite directions.

a is an extra-sized large pulley on one of the two pulleys a.

a is the clutch sliding on shaft e and adapted to engage either pulley a; The clutch is provided at the center with two beveled collars a which are engaged by the shiftingfork a, the shaft a of which passes through the shifting-bracket a", and is there connected to the shifting-lever a which is shifted by the stops a 011 the cutter-bar b. The handle 00 serves to shift the fork by hand. Bymeans of the beveled collars aiwith which the clutch is provided, I am enabled to obtain a firm and positive grip of the shifting-fork on the clutch. The shaft a that gives motion to the fork, is connected to the upper or closed end of the same. Through the loweror free ends of the fork-prongs on the opposite side of the workshaft passes a screw a as shown. If the contact-faces between fork and clutch should become worn, the screw a on the fork need only be tightened up in order to reestablish the firm grip of the fork. 5

In order to impart to the table d the trans Verse feed sometimes required, a frictionrocker b is placed upon shaft f, between the wheel f and a disk b Washers b, of leather or other suitable material, are set into and secured to surface grooves of the rocker and permit it to be tightly clamped in place by nuts 19 These washers cause the rocker to turn in the same direction and uniformly with the wheel and shaft until stopped by contact with the stops 1) b Thus no matter how long the stroke of the cutter-bar the travel of the rocker is always limited by the stops.

The rocker b is provided with an arm b to which is secured a perforated holder or clamp I)", through which passes the bar Z2 of a pawl Z), that engages a gear-wheel Z9 fast on transverse screw Z1 This screw is tapped into the lugs b, secured to the work-table d and imparts motion to such table along the crossways according to the usual manner.

The reciprocating cutter-bar open ther out or in the play of the rocker is increased or reduced in a very simple manner. \Vhen the cutter-bar moves away from the Work, the rocker moves toward the movable stop. During this motion the pawl Z) engages the gear-wheel Z2 and thus causes the work-table to be fed along the crossways. During the reverse motion of the cutter-bar the pawl is automatically disengaged from the gear-wheel in the usual manner.

The advantage of, my construction lies in the simple means of regulating the feed of the table, even while the machine is in motion, by the adjustable stop 1).

tion of the work-table, I have devised the following lifting-gearz A horizontal shaft 0', journaled in the crossways, may be revolved by a suitable handle broken off on left-hand side, Fig. 2. The shaft carries a worm 0 which engages a worm-wheel 0 The worm- Wheel in turn is tapped and is screwed on a fixed upright screw-shaft 0 The upper part or hub c of the worm-wheel bears against an eye of the bracket 0, projecting rearwardly from and secured to the crossways c and loosely embracing shaft 0 When the shaft 0 is revolved, it will cause the gear-wheel c to travel up or down the shaft 0 When traveling up, the hub 0 will push the eye o and with it the crossways c upward. \Vhen traveling down, it permits the crossways to descend by its .own Weight.

The work-table has heretofore usually been made in one connected piece, and if the work was to be tilted the entire table had to be tilted. I I have so constructed the table that only its top plate need be tilted, while the remainder of the table always retains its usual level position.

My table 01 is hollow, is open at the top and front and is provided with the hooks 0Z that engage the crossways c. The table has two depressions or slots into which are fitted two lugs d, on the under side of the top plate d. This top plate is provided at the back end with the two lugs or projections d cast on the under side of the plate. Pins (1 pass through perforations in the lugs C1 and the table (Z serves to pivotally connect the top.

plate to such table. At the front the plate (1' has two slotted curved guide-links 01 that project into the hollow body of the table.- The links (Z embrace guide-screws d screwed into the table. The guide-screws and links allow only a true tilting motion of the table without lateral movement. Across the interior of the table there is a cross piece d, in which is screwed a screw-shaft al that may be turned by hand. The upper end of this shaft bears against the top plate 01, and by turning the shaft this plate may be tilted so as to assumeany desired inclination.

A shaping-machine constructed according to my invention is simple in construction, is readily handled and adjusted, performs its work truly, and is not apt to wear out unevenly.

What I claim is 1. The combination, in a shaping-machine, of a work-shaft carrying a worm with a gearwheel engaging the worm, a shaft on which i the gear-wheel is mounted, concave worm- In order to permit the crossways to be IZHSGLT'OI lowered, so as to change the elevacollars a a reciprocating shaft a fork connected at its closed end to said shaft and engaging the collars a and a screw a, passing through the free ends of the fork-prongs and adapted to draw such prongs together, substantially as specified.

3. The combination of a work-shaft having a worm 6', with a gear wheel f engaged thereby and mounted on shaft f, a friction-rocker b also mounted upon said shaft, a pawl reciprocated by the friction-rocker, a gear-wheel b engaged by the pawl and keyed on shaft I), and with a table 01, .in which the shaft 1) is screwed, substantially as specified.

4. The combination of work-shaft 6, having worm c, with the gear-wheel f, engaged by said worm and operating the cutter-bar, a

Washers 12 within said "rooves a clam b secured to the rocker, a pawl for operatingthe cross-head and secured to said clamp and with a movable stop b, having a threaded shank Z7 screwed into the machine-frame, substantially as specified.

5. The combination of crossways c with horizontal shaft 0 journaled therein, a worm c on said shaft, a worm-wheel c meshing into said worm and having hub 0 a fixed upright screw-shaft engaged by the worm-wheel and with a bracket c on the crossways engaged by the hub, substantially as specified.

JAMES M. WRlG-HT.

Witnesses:

F. v. BaIEsEN, .A. JoNGHMANs.