US524889A - Chamfering-machine - Google Patents

Description

UNITED STATES' PAT-ENT OFFICE. v

THOMAS CRANEY, OF BAY CITY, MICHIGAN.

CHAMFERlNc-'MAcHlNE- SPECIFICATION forming part bf Letters Patent No.524,se9,eated August ai, 1894.

Application led November 4, 1893.11` Serial No. 490,025. (No model.)

To all whom it may concern:

Be it known that I, THOMAS CRANEY, a citizen of theUnited States, residing at Bay City, in the county of Bay and `State of Michigan,

have invented certain new and useful Improvements in., Chamfering Machines,` of which the following is a specification, reference being had therein to theaccompanying drawings.

`The invention consists in the peculiar construction of the feeding devices, the construction and arrangement of the chamfering saws and their supports, the construction of the crozing saws, and further in the peculiar construction, arrangement and combination of the various parts, all as more fully hereinafter described. j

In the drawings, Figure l is a side elevation of my improved machine. Fig. 2` is a plan thereof. Fig. 3 is a vertical, central, longitudinal section. Fig. 4 is a cross section on line a: a', Fig. 2. Fig. 5 is a perspective view of a portion of the cutting edge of one of the crozing cutters. therethrough. y

A is the frame of suitable construction to support the operating parts.

B are channel bars supported on top of the frame and forming the support for the work as itis fed through the machine. These bars are laterally adjustable upon the cross bars by means of clamping bolts'B engaging the slots B2 therein (Fig. 2)'.

C are carrier chains running in the grooves of the barsB and having upwardly projecting lugs D extending above the top of the bars adapted to engage behind the staves and feed them through the machine. These chains at their ends run over sprocket wheels E adj ustably secured on suitable transverse shafts E', and are driven through the pulley F on V the shaft F', the worm F2 thereon engaging` the worm wheel FB on the shaft of one pair of sprocket wheels, Fig. 1.

At the front end of the machine is a work table or work support, preferably formed by the bars G secured one at each side of the bars B.

His a cross-bar having barrels H in which 5o are secured the springlatches H2 having front Fig. 6 is asection means of suitable slots and clamping` bolts,

for work of varying thickness (see I', Fig. 3)..

J are side standards on the frame connected l by the cross-bars J at each end and centrally by the cross-bar J2. On the cross bars J are barrels K having screw-threaded plugs K at their upper ends adapted to bear upon springs L which are sleeved about the pins or i standards L at the ends of presser bars M, 7o one presser bar on each side of each carrier chain, as shown in Fig. 4, extending beneath the cross bar J2. These presser bars are laterally adjustable upon the cross-bars J and are secured in their adj usted positions by set screws J 3. Y

M are forwardly extending horizontal arms formed integral with the cross-bar J2 having boxes M2 at their outer ends in which is jour- 4naled the mandrel N of the cutting off saws 8o N one at each end thereof. Upon the opposite side of the cross-head J 2 are the brackets vO having a vertical adjustment by means of the screw shafts O which engage screwthreaded bearings in the top of the cross-bar J2 and are provided with suitable hand Wheels for actuating the same.

O2 are clamping bolts engaging slotsin the brackets and passing through the cross-bar for clamping the brackets in their adjusted 9o position. These brackets are provided with horizontally extending arms P in the outer ends of which are boxes in which is journaled the mandrel P which at its outer ends carry the crozing saws P2. These crozing saws are made of two saw disks a b provided with a` series of teeth c, the teeth of one saw being arranged opposite the interdental spaces of the other saw and each tooth having the chamfered I.cutting edge d, which cuts a shearing xoc cut by arranging the outer point e in advance of the inner point fforming the rearwardly inclined face g which throws the saw-dust between the teeth, thereby maintaining them clear and free at all times.

Q is a cross-bar beneath the table, vertically, adjustably supported upon the frame, by means of the clamping bolts Q engaged in vertical slots Q2 and adapted to be moved by means of the adjusting screws Q3.

R are yoke shaped frames having boxes R at the ends in which are journaled the mandrels R2on which are secured the chamfering saws R3. These yokes are centrally provided with segmental slots S with which clamping bolts S' engage, these clamping bolts passing through horizontal slots S2 in the cross-bar Q. This construction of parts enables me to adj ust the chamferin g saws to the proper height, by adjusting the cross-bar Q vertically, and to adjust these saws inand out for different lengths of staves by adj usting the yokes upon the cross bars by means of the clamping bolts S' in the slots S2, and to adjust the yokes to bring the saws to the proper angularity by means of the segmental slots S.

The parts being thus constructed their operation is as follows: The operator places a number of slats on the table Gwith their ends abutting against the gage board T and feeds them over. the edge of the table upon the gage bars I where each successive projection D of the carrier chain will engage on the rear edge of a single stave, forcing it beneath the spring latch H2. After passing which it will rest u pon the top of the channel bars. The stave is brought in proper relation to the saws by engagement of its end against the inclined adjustable guide bar T', against which itis forced by means ot' the adjustable spring arm Uwhich bears against the opposite end. Motion is communicated to the saw mandrel by means of belts driven from any suitable source of power, and as the blank passes through the machinebeneath the presser feet it is rst cut otf to length by the cutting saws N', next chamfered by the chamfering saws and finally grooved by the crozing saws and delivered from the machine by the carrier.

What I claim as my invention is- 1. The combination of the frame, longitudinal bars laterally adjustably secured thereon, carrier chains running in the grooves therein, a work table formed of bars secured to the channel bars, gage strips vertically adjustably secured to said channel bars at the end of the table, and spring latches above said gage strips, substantially as described.

2. The combination of the frame, the table having end board or fence T, the carrier, the adjustable inclined gage bar T at one side of the carrier and the adjustable spring presser arm U at the opposite side,- substantia'lly as described.

3. The combination with the frame and the endless` carriers, of the side standards, the connecting bars J at opposite ends of the standards, the laterally adjustable barrels K having screw plugs K at their upper ends, the presser bars M, the standards L on the bars M extending into the barrels, the springs L on the standards L their upper edges engaging the plugs K', and the set screws .T3011 the barrels Iengaging the connecting bars J for retaining the barrels in their adjusted positions, substantially as described.

4. In a stave machine, the combination ot a frame, a carrier, side standards on the frame, a cross bar connecting said standard centrally above the carrier, rigid forwardly extending brackets having boxes at their outer ends, a mandrel journaled therein, having cutting off saws yat the ends, brackets extending rearwardly from said cross bar, means for vertically adjusting the rear brackets, a mandrel journaled in boxes at the outer ends of said brackets, and crozing saws on said mandrels,A

substantiallyras described.

In testimony whereof I affix my sgnatu re in 1 presence of two witnesses.

THOMAS CRANEY.

Witnesses:

M. B. ODOGHERTY, O. F. BARTHEL.

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