US539246A

US539246A - Metal-sawing machine

Info

Publication number: US539246A
Authority: US
Publication date: 1895-05-14
Anticipated expiration: 1912-05-14

Description

(No Model.) 'a sheets-fsm 1. Y

Y J. vR. J. BALZ.

METAL SAWING MACHINE.

Patented May 14, '1895.

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ATTOR N EY me cams persas w. wendung wAsumaroN o c.

(No Model.) 3 sheetssheet 2. J. su R.}J. BALZ..

METAL SAWING MACHINE.

N0 539,246 Patented May 14, 1895.

WITNESSESM"I` /f ATTORNEY Tn: Nonms Eriks cm Pnooumm wAsHmaToN, n. Q

INVENTORS'.'

. (No Model.)

l 3 Sheets--Sheet 3. .J. 8v R. J. BALZ. METAL SAWING MAGHINE.

No. 539,246. Patented May 14, 1895.

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' ATTORNEY m: Nonms PETER: co., Pnoaumo., wnsnmmcn. n. c.

UNrrED STATES PATENT OFFICE.

JoHN BALZ AND ROBERT'JBALZ, or sYRAoUsE', NEW YORK.

- SPECIFICATION forming part of Letters Patent No. 539,246, date May 14, 1895.

Application rieti october 3,1894.

To @ZZ whom it mar/concern:

Be it known that we, JOHN BALZ and ROB- ERT J. BALZ, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Metal-Sawing Machines, of which the follow- I ing, taken in connection with the accom pau ying drawings, is'a full, clear, and exactdescription.

This invention relates to the class of sawing machines which have a reciprocatingsaw termed drag-saw and designed more specially for sawing metal.

The object of the invention Vis to produce a machine which shall be simple in construc tion, efficient in its operation, easily controlled and whichshall automatically cease to operate when the material is sawed through.

The invention consists in providing a suitable supporting frame (which in this case is of the form of a table) with asuitable pair of shaft supports, two shafts axially in line, one in each support, a bracket mounted gloosely on the inner ends of vsaid shafts, a pulley loosely mounted on one of said shafts, a reciprocating saw-carrying frame sliding on said bracket and suitable connections between said parts; and the invention also consists in theimproved details of lthe construction of the machine as hereinafter described and shown. in the annexed drawings, in which- Y Figure .1. is a front view of the improved machine. Fig. 2 is an end view of the same. Fig. 3 is a plan view. Fig. 4 is a sectional view taken on line l l in' Fig'. 3. Fig.,5 is a view taken on line 2 2 in same gure. Fig'.

I6 is a view taken on-*line 3 3, also in Fig. 3;

and Fig. 7 is a View taken on line 4 4 in Fig.

1, showing the construction of the saw-carrying frame and saw-guide hereinafter described. A y p Referring by letter to the several parts of the improved machine: -A-.is a post or pillar of a table having the cap or table -B- on its top and provided with the base -B- by which'it is sustained upright, said parts forming the mainQsupporting frame of ,the machine. The cap of said frame has mounted upon it the usual pillow-blocks -gg in which are journaled respectively the shafts =-D-D whichv are axially in line and are Serial No. 524,777. (No model.)

made by a double crank. Upon `said shafts p is loosely mounted a bracket C- having a rod d extending therefrom over the line of sawing and upon said rod slides the reciprocating saw-carrying frame --ct-v having two downwardly extendingI arms -a/-a-- in which the saw -sis held, Said bracket is formed of two upwardly converging arms -b-b-- forming two braces terminating at their junction with a box -bin which is heldthe aforesaid rod -df.

The saw-carrying frame -ais formed with a cylindrical portion a in its main portion for the reception of the rod -d, guides -c-cextending respectivelyfrom the upper and lower edges thereof to said cylindrical portion through which the sawguide -bpasses and is screw-threaded in its upper portion by which it is secured to the rod d-. v A

In the upper portion of the upper guide cwhich is preferably V shaped slides a which the screw threaded portion -fof the sawguide passes and a nut'-fon the upper end of said saw guide and bearing on said 'block holds the same in the V shaped portion of the gt1ide.-c. as shown in Fig. 7 of the drawings, and the upper portion of said sawcarrying frame is Vsplit longitudinally and is provided with screws or bolts -fto take up the wear on the aforesaid cylindrical portion thereof. The lower end of said saw-guidel is provided with a verticalslot or notch hmthrough which the saw slides as clearly shown in Fig. 7 of the drawings. l

To thekmain frame is secured a vise which may be` of any well known form to hold'the material to be sawed, and it is therefore not necessary to describe .thevsame ,A It is also 'un, necessary to describe the manner inwwhich the saw is held in the saw-frame as this is also a well known construction and any suitable means rnay be employed for the purpose.

Pivoted to opposite sides of the saw-carrying frame -a and extending rearward to the aforesaid cranks CV-CZ- are'two parwhich bars and cranks reciprocating motion lil is transmitted from the shafts to said frame, said cranks and bars being firmly held together by means of a block -dmbetween said bars and crank-pin -tZ- passing through all of said parts as clearly shown in Figs. 2 and 3 ot' the drawings.

-E represents the driving pulley whichv is loosely mounted on the shaft .D- and has aiixed to it a clutchmember -z--adapted to engage a companion clutch-member -z secured to said shaft. The throwing of said pulley and its clutch-member into and passes through said guide o and by gravity lies on the collar -jand bears against the hub proper when the pulley with its clutchmember is out of engagement with the shaftclutch member and'bypu'shing the leverrea'rward, the pulley-clutch `member is brought in contact with the shaft-clutch member 4and the machine is inits operative position. The lever is forced back t0 its normal position, but lying on the shaft and `against said collar to hold the pulley in said position by a spring ,-oseated in the guide or slot 0^- and bearing against said lever as clearly shown in Fig. 3 of the drawings. By raising the lever when the pulley is in said position the plate nwith its cam WJ-thereon is tilted toward the hub -jof the pulley and 'the aforesaid lug -7con the hub striking the cam throws the pulley away from the shaft clutch `member thereby stopping the operation of the machine,`and the lever is forced back as aforesaid to its Vnormal position and again by its gravity lies on the collar and the pulley is free to turn on the shaft -D-.

Thestopping of the machine automatically when the materialis sawed through is performed by the following mechanism: lTo one of the arms -bof the bracket u#C--is secured a toothed segment -'h engaging a vertically movable ratchetbar-7thaving a downward extension tt-extending through a slot in the top of the main fframe on the lower portion of which are secured Weights `g"-`to regulate the pressure of thesaw on the material to be `sawed, and an adjustable stop g'- thereon bearing against the under side'of the top -Be-of the maintfraineto'limit the downward movement ofthe sawLc-arrying Pivoted to the aforesaid pil-i with its rear end under the aforesaid camplate -n-' and secured to the aforesaid segment is a bar -'Z- having an adjusting pin or screw -mby which it bears on the oppositeend of said lever, and when the sawcarrying frame -ahas reached a certain point in its downward movement (regulated by the stop -g'-) the bar pushes said end down and the rear end` bearing on the under side of the plate `n with its cam -nas aforesaid, thereby tilting the same toward the hub--jand said cam in the path of the lug -kon the hub and the lever-r is thereby raised from the shaft by reason of its being pivoted to said cam-plate as aforesaid and by said lug striking the cam, the pulley -E with its clutch-'member e-f-is thrown away from the shaft-clutch member -iand the collar 7"'- on the hub of said pulley is per mitted to slide under the lever as shown in Fig. 3 of the drawings. By raising the sawcarrying frame which thereby moves the bracket -C-, the segment -7z and the bar -Z- secured to said segment, the plate -n is relieved from pressure of the lever -Z and the weighted lever r pivoted to said plate by its gravity `falls into its normal `position lying on the collar jand thereby tilts said plate "with its cam away from the hub of the pulley-E andout of the path of thelug -7r, and the pulley with its clutchmember is free to again be thrown toward the s'haftclutch member to again start the machine.

To any suitable portion of the main frame is secured a suitablesupport -o-`on which is a roller -h-' forming a bearing for the ratchet-bar -i and bears against the side thereof opposite the segment. On the upper end of said bar is another stop -1 which may be of any suitable form and is adapted to come in contact'with the roller -L- to limit the upward movement of the sawcarry ing frame more clearly shown `in Fig. l ofthe drawings.

What we claim ist l. In ametal sawing machine, the combination with the main supporting frame, of the driving shaft mounted thereon, a pulley on said shaft, an upright bracket loosely mounted on said shaft, a rod extending from said bracket a reciprocating saw-carrying frame sliding on said rod, a saw-guide extending through said frame and secured to said rod and suitable connections between the shaft and saw-carrying frame as set forth and shown.

2. In a metalsawing machine, the combination with the'main supporting frame, of supports thereon, two Shafts axially in line, one journaled in each support, a pulley on one shaft, a movable' upright bracket l loosely mounted on the inner end portions of said shafts, Va 'rod extending from said bracket a reciprocating saw-carrying frame sliding` on said rod, a saw-guide extendingthrongh said IOO frame and secured to the rod and suitable connectiousbetween said shafts and frame as set forth and shown.

' 3. In a metal sawing machine, the combination with the main supporting frame, of a pair of supports thereon, two shafts axially in line,

-one journaled in each support, a pulley on one shaft, an upright bracket loosely mounted on` the inner end portions of said shafts, a rod extending from said bracket, a reciprocating saw-carrying frame sliding on said rod, a sawguide passing through said saw-frame and secured to the rod, and suitable connections between saidv shafts and saw-carrying frame as set forth and shown.

4. In a metal sawing machine, the combination with the main supporting frame, of a pair of supports thereon, two shafts axially in line,`

one journaled in each support, an upright bracket loosely mounted on the inner end portions of said shafts, a rod extending from said bracket, a reciprocating saw-carrying frame a saw-guide extending vertically through the' saw-carrying frame and secured to the aforesaid rod inside of the frame as described and shown.

5. In ametal sawing machine, the combination with the main-supporting frame, ofa driving-shaft, a pulley loosely mounted thereon, asuitably supported saw-carrying frame, suitable con nection between said frame and shaft, a manually operated lever to throw the pulley in operative position with the shaft and means to automatically throw the pulley outof said position as set forth. v

6. In a metal sawing machine, the combination of two shafts axially in line suitably supported on the main frame, a pair of upwardly converging arms loosely mounted thereon, a box substantially as shown formed attheir junction, a rod extending from said box, a reciprocating saw-carrying frame sliding on said rod, and suitable connections between said frame and shafts, as shown.

7. In a metal sawing machine, the combination with the main supporting frame, of supports thereon, a pairot' upwardly converging arms loosely mounted thereon, a box substantially as shown formed at their junction, a rod secured in said box and extending therefrom over .the line of sawing, a reciprocating sawcarrying frame sliding on said rod, a sawguide secured to said rod, and suitable mechanism to operate said saw-carryin g frame substantially as set forth and shown.

8. In a metal sawing machine, the combination with the main supporting frame, of a pair of supports, two shafts axially in line, one journaled `in each support, ay pulley on one shaft, a pair of upwardlyconverging armslon the inner end portions of said shafts, a rod extending from their junction, a reciprocatingsaw-carrying frame sliding on said `rod and suitable connections between said frame and'shafts k'substantially as described and shown.

9.V I-n combination with the main support-y ing frame, two shafts mounted thereon axially in line with each other, a pulley on one shaft, a bracket mounted loosely on the inner end portions of said shafts, a rod extending from said bracket, a reciprocating saw-carrying ner ends of said shafts and pitmen extending from oppotite sides of thesaid frame to said cranks as described and shown.

10. The combination of the driving shafts -D--D-, the bracket -C looselyv mounted thereon and having a rod -dextend# ing therefrom, the reciprocating saw-carrying frame -ttsliding on said rod, a guide -c formed in the lower portion of said frame, a corresponding guide -cin its upper portion having the V shaped portion l-eand correspondingly shaped block -esliding therein, a saw-guide -bscrew-threaded in its upper portion extending through the sawframe and through said lower guide and through the aforesaid rod -cZ- and secured to the same, thence through the upper guide -c-'and through the aforesaid block -e-, and a nut f on its upper end as shown for thepurpose set forth.

11. The combination with the main supporting frame, of two shafts axially in line supported thereon, a pulley on one shaft, an upwardly extending bracket mounted loosely on the inner end portions of said shafts, a rod extending from said bracket, a reciprocating saw-carrying frame sliding on said rod, suitable connections between said shafts and frame, a segment secured to said bracket and mechanism connected to said segment to coun.- terweight the saw-carrying frame and limit the downward movement thereof as set forth and shown.

- l2. The combination with the main supportingframe, of supports thereon, two shafts axially in line journaled in said supports, a pulley on one shaft, a pair of upwardly converging arms extending from the inner end portions of said shafts, a box substantially as described and shown, formed at their junction,

a rod extending from said junction, a reciprocating saw-carrying frame sliding on said rod, suitable connections between saidframe and shafts, a toothed segment secured to one of said arms and a vertical ratchet-bar en`- gaging saidsegment to counter weight-the saw-carrying frame and limit -the downward l movementth'ereofas set forth and shown.l

18.v The combination with the main supportley on one shaft, a pair of u'p wardly con verging arms extending from the inner end portions of said shafts, a box substantially as described IIO and shown formed at their junction, a rod secured therein and extending therefrom over the line of sawing, a reciprocating saw-carrying frame sliding on said rod, cranks connecting the inner ends of said shafts, pitmen extending from opposite sides of said frame to said cranks, and secured thereat, a saw-guide extending through said frame independently thereof and secured, to the aforesaid rod, a toothed segment secured to one of said4 arms, a vertically movable ratchet-bar engaging said segment, a roller forming a bearing for said bar suitably supported on the main frame, weights on said bar a stopon its lower portion to limit the u pward'movement thereof, and a stop at itstop portion to limit the downward movement for the purpose set forth.

14. The combination with the main supporting frame, of a driving shaftsuitably mounted thereon, a bracket loosely mounted on said shaft and apulley loosely mounted thereon,a reciprocating saw-carrying frame sliding on said bracket, suitable mechanism connecting said frame and shaft, and means to automatically throw said pulley out of gear for the purpose set forth.

15. The combination with the main supporting frame, of a pair of supports, two shafts axially in line, one i'n each support, a pulley on one shaft, a pairof upwardly converging arms mounted loosely on the inner end portions of said shafts, a rod extending fromtheir junction, a reciprocating saw-carrying frame sliding on said rod, a saw-guide extending through said frame, independently thereof and secured to said rod, cranks connecting the inner ends of said shafts, pitrnen connecting said saw-frame and cranks, and mechanism to automatically throw said pulley out of gear as described and shown for the purpose set forth.

16. The combination with the-main supporting frame, of two shafts axially in line suitably supported thereon, a movable upwardly extending bracket substantially as described and shown loosely mounted on the inner end portions of said shafts, a rod extending therefrom, a reciprocating saw-carrying frame sliding on said rod, asaw-gude extending through said frameindependently thereof and secured to said rod, a pair of cranks connecting the inner ends of the shafts, pitmen extending from opposite sides of said frame to the cranks and secured thereat, a toothed segment secured to or formed on said bracket, a suitably supported vertically movable ratchetbar engaging said segment, an extension on the lower end of said bar, having weights thereon, stops respectively on the lower end of said extension and upper portion of `the ratchet-bar to limit the upward and downward movement thereof, a pulley mounted loosely on one of said shafts and havinga clutchmember thereon, a plate havinga cam thereon pivoted to one of the shaft supports, and capable of `being tilted toward and'from the hub of the pulley, and normally away therefrom, a companion clutch-member secured to the shaft, and adapted to engage the aforesaid clutch-member, a lever pivoted to the same shaft support with one endlbearing on the under side of saidcam-plate, a bar secured to the aforesaid segment bearing on the oppositeend of said lever to tilt said-cam-plate toward the hub of the pulley,and a lugon said hub adapted to strike said cam to throw the pulley with its clutch-memberoutof engagement with the shaft `clutch-member to automatically stop the operation of themachine as described and Shown.

17. The combination of the .driving shaft suitably mounted on the main supporting frame and having a clutch-member secured thereto, a pulley loosely mounted thereon having a companion clutch-member, a plate pivoted below said shaft and to its support having a cam formed thereon, a weighted lever pivoted to said cam-plate and holding the cam by its gravity normally away from, the hub of said pulley, -a `collar formed on said hub and of `smaller `diameter than the `hub and of :greater diameter than the driving shaft, said lever being adapted to reston the collar and against the Vend of the hub when the clutch-members are disengaged, and to rest on the shaft and bearing in the same manner `against said collar when the said clutch-memberslare in engagement as shown for thepurpose set forth.

18. The-combination of the drivingshaft having a `clutch-member secured thereon and its support, a pulley loosely `mounted on said shaft and having a companion clutch-member secured to its lhubanda lug on the periphery of said hub, a plate pivoted `to said support and havinga cam formed thereon,.and a guide therein a weighted lever-pivoted to the lower portion of said plate andV by gravity holding the cam away from the aforesaid lug on the hub, and movable sidewse in said guide to throwthe pulley with its clutch-member into engagement with the shaft clutch-member to operate the machine, a spring in said guide to throw said lever back to its normal position, said lever being adapted .to tilt the camplate toward the hub of the pulley in its rising movement by reason of its being pivoted as aforesaid, and the lug on said hub to strike the cam to throw the pulley and its clutchmember away from the shaft clutchmember as shown for the purpose set forth.

19. In ametal sawing machine, the combination of the driving shaft suitably supported on the main frame, a pulley thereon, a bracket substantially as described and shown loosely mounted on said" shaft, and supporting the saw-carrying frame and adapted to swing thereon and `carry therewith said frame, a

toothed segment secured to or formed on said "bracket, a plate pivoted to the shaft support and having a cam formed thereon and` aguide therein, a lever pivoted to the lower portion of said plate holding the cam by :its gravity normally away from thehub of thepulley, a

spring in said guide to-hold said ,leverl in its normal position, a lever pivoted` to the shaft ward extension on said bar, an adjustable' stop on said extension bearing against the under side of the top of the main frame, said extension extending through said top by means of a slot therein, a stop on the upper portion of said bar, and weights on the lower portion of extension as shown for the purpose set forth.

20. The combination of the support -g, driving shaft -D- journaled therein, a

plate -'li-V pivoted'to said support having a cam -n formed thereon, a pulley -E loosely mounted on said shaft',l a lug -Za'- formed on 4 the hub -jof said pulley, a

guide -oformed in said plate, a Weighted lever -rpivoted to vsaid plate and passing through said guide, a spring .-oseated in said guide and bearing against the lever,a collar JV-I formed on the hub, a clutch-member -z'' secured to said hub and a oompanion clutch-member -lsecured to said shaft as shown for the purpose set forth.

In testimony whereof We yhave hereunto signed our names this2lst day of September,'

JOHN BALZ. F.. s] ROBERT J. BALZ. L. s] Witnesses:

C. L. BENDIXON, `J.J. LAAss.