US441636A

US441636A - Polishing-machine

Info

Publication number: US441636A
Authority: US
Publication date: 1890-12-02
Anticipated expiration: 1907-12-02

Description

(No Model.)

Sweets-Sheet 1.

J. B. BENNETT.

POLISHING MACHINE.

Patented Dec. 2, 1 890.

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(No Model.) 5 Sheets-Sheet 4.

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| IIIIHIIIIIIIII- j w- UNITED STATES PAT NT fission.

JOSEPH B. BENNETT, OF WATERTOWRASSIGNOR, BY MESNE ASSIGNMENTS,

TO THE BERLIN MACHINE IVORKS, OF BELOIT, \VISCONSIN. A

POLISHING-I-MACHINE.

SPECIFICATION forming part of Letters Patent No. 441,636, dated December 2, 1890';

Application filed July 10, 1889. Renewed October 2,1890. Serial No. 366,840. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH B. BENNETT, of \Vatertown, in the county of Jefferson and State of WVisconsin, have invented new and useful Improvements in Polishing-Machines; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to that class of polishing-machines which are adapted for finishing fiat surfaceson wood, such as the sides of doors and many parts of the material of which the cases of pianos are made.

The novel features of my device will be hereinafter particularly claimed.

' In the drawings, Figure 1 is a side elevation of my improved machine. Fig. 2 is a detail of the mechanism bywhich the sand-cyl inder is reciprocated endwise, where the sandcylinder is located at right angles to the longer axis of the machine. Fig.3 is a modified form of mechanism used for reciprocating the sand-cylinder, Where the cylinder is located at an inclination to the longer axis of the machine. Fig.4 is a plan of the complete machine with the top presser-frame and its supported mechanism removed. Fig. 5 is a view at the side of the operating parts of the mechanism, the side frame being omitted to show those parts, and a portion of the mechanism in connection with one of the flat polishers being shown in section to exhibit the interior parts more completely. Fig. 6 is an enlarged detail of a bolt such as is used for supporting and adjusting the table. Fig. 7 is an under side view of a polisher adapted to reciprocate laterally. Fig. 8 is an under side View of a polisher adapted to reciprocate end wise. Figs. 9 and 10 are each modified forms of mechanism adapted to reciprocate the cyl inders. Fig. 11 is a plan of a modified form ofa polishing-machine containing only flat polisher-s. Fig. 12 is a plan of a modified form of machine containing only a sand-cyL inder and a cutter-head *located at an angle to the transverse axis of the machine.

The same letters and figures refer to like parts in all the views.

A is the main frame, and B is the top .or presser frame, supported adjustably upon the frame A by the screw-threaded bolts 0 O, having bearings in the presser-frame and turning into the main frame, the presser-frame being guided in its movements up and down by the guide-legs D D, rigid to the presserframe and traveling in slots or ways therefor in the main frame.

pinions on shafts F F, having their bearings in the presser-frame, one of which shaftsLF is provided with a crank-handle G, whereby said shafts are rotated and the resser-frame is raised or lowered, as desired. The upright shafts H H H, provided with hand-wheels at their tops, are attached to mechanism adapted to raise or lower the cutter-head or a sand-cylinder, respectively. p The foregoing described mechanism, lettered from A to H, is not more fully illustrated or described herein, as these partsare substantially the same as shown and described in the application of myself and Anson P. Boardman, filed April 22, l88.9, Se'rial No. 308,205, for apatent on a polishing-machine, and no claim of novelty is here made for these parts.

I is the table supported adjustably on the main frame and provided with slots for the reception therein of the cutter-head, the sandcylinders, the flat polishers, and the feed-rolls, respectively. j

The parts of the machine as thus described and lettered are of the same form and character as in machines described and shown in applications for The bolts 0 G are provided with beveled pinions E E, meshing with.

patents heretofore made by myself and A.P.Boardman,seriallynumbered 306,667 and 308,205, filed, respectively, on April 10 and 22, 1889, in which applications these parts have been fully described, and are therefore not further described herein, as they form no principal part of my present invention.

In polishing material for piano-cases it is important to remove all wavyridges and the slightest unevenness of the surface of the material, and to accomplish this is one of the obj'ects of my invention, and for that purpose I use a cutter-head and a sand-cylinder, or one of them, located diagonally in the machine, and two flat olishers, one reciprocating endwise and the other laterally, or the polishers with such double motion alone, or the sandcylinder or'cutter-head in a diagonal position, as found most desirable for the particular work being performed.

The mechanism for reciprocating the cylinders and the polishers and the mechanism whereby the table is adjusted and held in posit-ion are also parts of my invention. A cutter-head 1, having knives 2 2 secured removably thereto, affixed to a shaft 3, having its hearings in adjustable blocks on the frame A, is located diagonally across the machine. A sand-cylinder 4, aflixed on a shaft 5, having its bearings in adj ustable'blocks on the frame, is also located diagonally across the machine, and another sand-cylinder 6 on a shaft 7, having its bearings in adjustable blocks on the frame, is located directly across the frame at right angles to its longer axis. Two flat polishers 8 and 9 are also located in a right line across the frame, one of which is adapted to be reciprocated endwise, the other of which is adapted to be reciprocated laterally. A number of feed-rolls 10 are supported on springs yielding in the frame, one roll being placed in front of the cutter-head and others severally between the cutter-head and cylinders, and between the cylinders and the polishers, and between the polishers, and one and an idle-roll 10' being located at the tail of the machine after the last polisher.

In the presser-frame B is located a number of feed-rolls 11 11, one above each of the rolls 10 10, each of which feed-rolls 11 11 is provided with a pinion 12 at one end, meshing with the pinions 13 13, journaled 011 the presser-frame B, whereby the series of feedrolls above are rotated in a train by motion communicated from the pinion 12, meshing with a cog-wheel 16, which is driven by power communicated thereto from the band-wheel shaft 17 through shaft 18 and cog-wheels thereon, as shown in Figs. 1 and 4, respectively. Idle-rolls 14 14, having their bearings in the presser-frame B, are located above the sand-cylinders.

The shafts 3, 5, and 7 are provided with band-wheels 3, 5, and 7', respectively, for connecting them operatively with the powersupplying mechanism. For reciprocating the cylinder 6 the shaft 7 is movable endwise in its bearings in the frame A, and the shaft is provided with a loose collar 13, riding on the shaft between the rigid shoulder 19 and the adjustable shoulder 19'. A bent lever-arm 20 is pivoted at one end on the frame A and at the other end is bifurcate, one arm passing on each side of the collar 13 each arm being pivoted to a reciprocating block 21, which blocks 21 are received and bear in ways therefor in the collar 13. The arm 20 is pivoted centrally to a short connecting-rod 22, which at its inner end rides 011 an eccentric portion of shaft 23. The shaft 28, supported in bearings on the frame A, is provided with pinions, which mesh with pinions on the shaft 17,

polishers are provided with blocks 24-24; and

24: 24:, respectively,which blocks are movable in ways on the under side of the polisher, the blocks 24 24; being adapted to travel endwise of the polisher, and the blocks 24 24: being adapted to travel in ways laterally, and these polishers are supported in ways 25 25 and 25 25, respectively, in the frame, whereby the polisher 9 (shown in detail in Fig. 7) is permitted to reciprocate laterally, and the polisher 8 (shown in detail in Fig. 8) is permitted to reciprocate endwise in the frame. These polishers are each reciprocated by crank-wheels, one of which 26 is seen in Fig.

5. These crank-wheels are each provided with a wrist, which enter apertures therefor in blocks 24 24 and 24' 24, and these crankwheels are secured to short shafts 27, having pinions meshing with pinions on transverse shafts 28 and 29, which shafts 28 and 29 are provided with pinions meshing with pinions on shaft 23, whereby they are rotated. It will be understood that by the rotation of the crank wheels 26 the polishers are reciprocatcd by the wrists on the wheels, the blocks 24: and 24' reciprocating in one direction only, whereby the polishers are reciprocated in the direction at right angles to the movement of the blocks, and that as the

blocks

24 and 24 reciprocate in directions at right angles to each other the polishers themselves reciprocate in directions at right angles to each other. Above each of the polishers 8 and 9 are presser-bars 30 and 30, respectively, which are supported movably in vertical ways in arms 31 31, pivoted on the-presser-frame B, and are held yieldingly up to their work by springs, one of which is shown at 32.

In Fig. 9 a modified form of lever-arm 33 is shown, which is centrally pivoted on the frame, and in Fig. 10 another form of arm 34 is shown, which is pivoted to the frame at one end and is connected centrally to the shaft of the cylinder, these two forms of arms being equivalents forv the arms 20. (Shown in Figs. 1 and 2.)

Fig. 11 is a plan of a modified machine for using the polishers alone, and a machine thus constructed is adapted for finishing the surface of fine work when it has been already polished to some extent by other machines, it being necessary to supply a band-wheel 35 and its shaft for driving the mechanism, which band-wheel andishaft correspond to the shaft 17 and band-wheel thereon, (shown in Fig. 1;) also, Fig. 12 shows a modified machine for doing the heavier or greater amount of polishing, in which the cutter-head, located diagonally, and a sand-cylinder in connection therewith are used without polishers.

Fig. 6 is an enlarged view of a bolt 36, which turns by a screw-thread through a flange A of the frame A and is adapted for supporting and adjusting the table I vertically. The shank of the bolt 36 turns by a screw-thread in the flange A by means of flat faces 37, to which a wrench may be applied, and is held in position by the jam-nut 38 turning against the lower surface of the flange A. The bolt above the head is provided with a smaller shank 39, which passes through the table I and receives a nut 40 thereon, which turns against the table and holds it firmly in position on the head of the bolt 36.

The feed-rolls 11 are provided with pinions,.

and other pinions journaled on the frame B, meshing with these pinions, form a train whereby the feed-rolls are rotated. These pinions are not shown in the drawings, but their places are indicated by the curved covering therefor. (Shown at 41 in Figs. 4, 11, and 12.) A presser-bar15 is located in swinging arms 15 above the cutter-head, which presser-bar is similar in construction and operation to the presser-bars 30 and 30.

No claim is herein made for the novel features in the fiat-topped reciprocating polishers shown in Figs. 7 and 8 separately, nor in the mechanism shown in these figures by which those polishers are operated, I having filed an application, Serial No. 317,329, on July 12, 1889, for a patent on these devices.

No claim is herein made for any device that is the same as or the equivalent for the bell-cranks L L and the mechanism by which they are operated, as shown and described in applications for patents filed by myself and Anson P. Boardman, being serially numbered 306,667 and 308,205, filed April 10, 1889, and April 22, 1889, respectively.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a polishing-machine, the combination, with two rotating sand-cylinders, one located at right angles to the longer axis of the machine and the other located diagonally to the axis of the machine, of a shaft 23, parallel to the longer axis of the machine, a connecting-rod 22, riding on an eccentric on shaft 23 and connected to a lever-arm 20, in which arm the shaft of the right-angled cylinder rides and by which it is reciprocated at right angles to the shaft, and a jointed arm 22', riding on an eccentric on shaft 23 and connected to a lever-arm 20, inwhich the shaft of the diagonal cylinder rides and by which it is reciprocated diagonally to the shaft, both cylinders being reciprocated synchronously, but n different directions, by the rotation of shaft 23, substantially as described.

2. In 'a'polishing-machine, the combination, with rotating sand-cylinders supported on the frame below the table, of a cutter-head supported in the frame below the table and located diagonally to the longer axis of the machine, and a presser-bar located in a presserframe above the cutter-head, substantially as described.

3.. In a polishing-machine, two flat polishers supported on the main frame, one polisher being constructed for and having reciprocatlng movement laterally and the other polisher being constructed for and having reciprocating movement endwise, substantially as described.

4. In a po1ishing-machine, the combination,

with the shaft of a diagonally-located rotating cylinder, of a lever-arm 20, pivoted at one end diagonally on the frame and at the other end connected movablyto the shaft of the diagonal cylinder, and a connecting-rod 22, having a central joint and pivoted at one end to the lever-arm 20 and at the other end riding on an eccentric on a shaft parallel with the longer axis of the machine, substantially as described.

5. In a polis11ing-machine,the combination, with two rotating sand-cylinders supported in the main frame below the table, one of which cylinders is located diagonally to the longer axis of the machine, of two reciprocatingfiat polishers, one of which has a reclproeating movement laterally and the other one a reciprocating movement endwise, substantially as described.

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

JOSEPH l3. BENNETT.

Witnesses:

ANNA FAUST, C. T. BENEDICT.