US1996876A

US1996876A - Glass cutting machine and the like

Info

Publication number: US1996876A
Application number: US619580A
Authority: US
Inventors: Mcdowell Thomas
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-06-27
Filing date: 1932-06-27
Publication date: 1935-04-09
Anticipated expiration: 1952-04-09

Description

April 9, 1935. T. M DOWELL GLASS CUTTING MACHINE AND THE LIKE Filed June 27, 1932 4 Sheets-Sheet Invenlor Thomas Mffloweli April 9, 1935. T. M DOWELL GLASS CUTTING MACHINE AND THE LIKE Filed June 27, 1932 4 Sheets-Sheet 2 Inventor tlorrzey April 9, 1935. T. M DOWELL GLASS CUTTING MACHINE AND THE LIKE Filed June 27, 1932 4 Sheets-Sheet 5 km 5 a Q ('0 3 gm Inventor mamas ZOWEZZ By 6m ii flltomey April 9, 1935. T. MCDOWELL GLA SS CUTTING MACHINE AND THE LIKE 4 Sheets-Sheet 4 Filed June 2'7, 1952 Inventor Thomas M Dowell Patented Apr. 9, 1935 ITED PATENT oF icE 1,996,876 7 GLAss CUTTING MACHINE AND THE LIKE Thomas McDowell, 'Utica, Ohio Application June 27, 1932, .Serial No. 619,580

Claims.

My invention relates to machines :for cutting glass and :the like sheet material, particularly to a power operated machine of this type, and

an important object of my invention is to provide .5 a machine of this type which is not only rugged and efficient, but which accurately cuts large sheets of glass and the like into smaller strips or forms.

Other objects and. advantages of my invention 10 will be apparent from a reading of the following description in connection with the drawings,

wherein'fo-r purposes of illustration I have shown a preferred. embodiment 'of the "invention.

.Inthe drawings:- Q

Figure l'is a general sidezelevational view of the embodiment.

Figure 2 is a top plan view ofFigure 1.

Figure 3 is a longitudinal vertical sectional View taken .just inwardly of the large toothed wheel shown in Figure 1.

Figure 4 is a transverse vertical sectional view through the brush holder mechanism.

Figure 5 is a transverse vertical sectional View similar to Figure 4.

the wiring of the device. v

Figure '7 is a longitudinal vertical sectional View approximately on the line 1--'l of Figure 5.

Figure'8 is an enlarged top plan View of 'them'otor support and adjacent parts with the motor removed.

Figure 9 is an enlarged elevational view of the side of the embodiment opposite that shown in Figure -l.

Figure 10 is a longitudinal vertical sectional View through the outside portion of the structure shown in Figure .9.

The embodiment comprisesgenerally a stationary bed plate of :such material that it will not scratch the glass 'or the like to be cut and upon which it is to rest. This bed plate is provided at one end with a convenient handle on which is mounted an electri'cswitch. On the bed plate is also mounted :a block'which is provided in two sides with grooves or channels in which move bearings which carry a motor driven slide which carries a cutting wheel or diamond point for outing the glass or the like as'the slide travels backwardly and forwardly under-the control of the operator, whereby large sheets of glass or the like may be accurately and ,quickly marked off or cut, and other accurate operations performed which it is not ordinarily possible to perform by the manual means now in use.

Referring in detail to the :drawings, wherein Figure 6 is a diagrammatic representation of a double-pole double-throw switch 8, the function of which will also be subsequently described, in

connection with the operation of the machine under the control of the operator thereof.

Longitudinally and approximately centrally on the base or bed plate there is disposed an elongated squared preferably metallic block 9 of a length'slightly :longer than the length of the cuts which may be desired to make. The block 9 is provided in its upper face with a channel It] and its right hand face with a channel H extending the length thereof. In each'of the channels there is arranged a roller I2, 13, respectively. Upon and against the block 9 there slides a slide of L- shaped cross-section which is generally designated :14. This slide i4 is comparatively shortv andslides on the upper facezandright handface of the block 9 and upon the upper surface of the base as can be clearly seen in Figure '5. The rollers I2, 13 extend into notches formed in the slide and corresponding in position to the channels in the block 9. The outer side of the slide M has arranged thereon an adjustable block 15 which carries the cutter generally designated [6 which will be subsequently described in detail.

At the right hand marginal portion of the upper face of the slide !4 there is mounted an electric motor 1! which has its drive shaft I8 extending toward the opposite side of the machine and provided with a pinion l9 meshed with a large gear 20 carried on a shaft '2! journaled in a standard 22 which is'carried by frame means 23 fixed to the left hand side of the slide l4 so as to move with the slide relative to the block 9 and base 5. The shaft 2% carries, inwardly'of the standard 22, a small fixed pinion M which is meshed with another pinion 25 carried by a stud shaft 26 which is mounted within the frame means 23 and on the slide 14. Y

The pinion 25 is meshed with 'a rack 21 which V is formed on the upper edge of a rack bar 28 attached by suitable means to the left hand side of the block 9. By this arrangement, actuation of the motor :1 will cause rotation ofthe train 43 is normally downwardly maintained by springs motor;

of gears mentioned on the rack 21, whereby the slide I 4, carrying the motor and the cutter will be causedto travel in either direction relative to the length of the block 9 and the base plate 5.

The double-pole double-throw switch 8 has its points connected to four

contact rails

29, 38, 3! and 32 which are arranged in this order spaced downwardly and projecting laterally from the side of a dielectric block 33 which is mounted by suitable means 34 to .the outside of the rack bar 28 and as can be clearly seen in Figure 4, the rack bar 28 being connected by suitable means 35 which pass through it into the block 9.

The motor I! is wired to four

brushes

38, 31, 38 and 33 carried by the bracket 48 depending from the frame 23, which wipe the

contact rails

29, 38, 3! and 32, the rails being connected to a source of electrical energythrough the double-pole, double-throw switch 8 as shown in Fig ure 6. Suitable cables, four in number, generally designated 42 lead from the brushes to the The to and fro motion of the slide relative to the block and base plate may be controlled as desired by the operator by throwing the arm of the switch 3 to one side or the other.

The cutter generally designated I8 is mounted on the adjustable block [5 already mentioned, whichis laterally adjustable relative to the slide M. The cutter comprises the frame 43 attached to the outer end of the block I5 by a dovetail tongue 55 which slides vertically in a dovetail slot in the outer'end of the block I5, as indicated in Figure 8. A vertical set screw 54 carried by a portion of the frame 43 which overhangs the block 55 is arranged to engage the top of the block l5 for adjusting the frame 43 vertically relative to the block 15. Seen from above the frame 43 is U-shaped. Seen from the outer end, the frame 43 is L-shaped. A crescent shaped carrier $5 is pivoted as indicated at between the legs 49 on bosses on the carrier, "slides on the reduced portion 58,0f the cutter 46 and abuts a shoulder thereon, and normally rests upon the upper side of the crescent carrier. A member 5: straddling the legs of the frame 43 carries a vertical adjustment screw 52 for engaging the free end of the crescent carrier 45 for adjusting it toward the work. Compensatory vertical movement ofthe cutter 4B is provided for by its slidable mounting on the carrier and the springs 49.

. For lateral adjustment of the block I5 and consequently of the cutter 46 relative to the block 9, there is provided at either side of theblock l5 a horizontal laterally extending

rod

55, 56, respectively, on which slide

lugs

51, 58, respectively, projecting from the opposite sides of the block l5 and provided with set screws engaging the rods for maintaining the lateral adjustment of the block [5. These set screws are indicated in Figure 5 by the numeral 59.

be accurate throughout their length, as will be obvious.

Reference to Figure 6 will disclose the manner of wiring the device of the invention so that the 'motor may be easily. reversed and controlled for starting, stopping, and controlling the to and fro motion of the slide carrying the cutter. As in Figure 4, the

numerals

29, 38,'3l and 32 in Figure 6 designate the contact rails, the numeral I7 designates the motor, and the numeral 8 generally designates the double-pole, double-throw reversing switch mentioned. It will be obvious that the, conductors generally designated 42 are connected to opposite sides of the field of the motor !1 and to alternate contact rails. To these contact'rails the points of the switch 8 are connected in alternate manner as shown. 'In the position of the switch 8 indicated in Figure 6 the

rails

32 and 29 are energized, while the rails 38 and 3| are deenergized, whereby the motor will be caused to rotate in one direction. In an opposite position of the switch 8 the remaining contacts of the switch 8 are bridged and. the remaining contact rails are energized to the exclusion of the others, whereby the motor is reversed or put, into rotation in the opposite direction. Since the energization of the contact rails in pairs is in the control of the operator of the machine, it will be obvious that. a-cut in the workmay be made in either direction of movement of the slide at will. The push button switch I is so arranged in the circuit that when the switch 8 is set in-one position, the push-button 1 may be utilized. for controlling the source of electrical energy there to, so as to-energize or deenergize the contact rails and the switch 8 at the will of the operator.

combined in a single organization, wherein the switch 8 will be arranged to have a neutral position corresponding to the off position of the switch I, as well as the reversing function.

Though I have shown and described herein a preferred embodiment of the invention, it is to be definitely understood that 'I do not desire to limit the application of the invention thereto, and any change or changes may bemade in material and structure 1 and arrangement of parts, within the spirit of thelnvention and the scope of the subjoined claims.

What is claimed is:-

1. A cutter for sheetglass, said cutter comprising a base for resting on the sheet glass, a longitudinal block on the top of said base and spaced froma side of said base, a slide having a part sliding on the top of said block, a second part sliding against the side of said block against the mentioned sideof the base, and a third part extending from said second part and sliding on the top of the base, the slidably engaged surfaces of the first mentioned part and said second part and the slidably engaged surfaces of the top, and of said mentioned side of the block being formed with registering longitudinal grooves, rollers in said registering grooves, said rollers being of sufiicient diameter to extend in and between each pairof registering grooves and thereby positively.

If desired, the switch 8 and the switch "I may be said side of the'block, .a third part depending f-romsaid second :part and :slidably engaging the top of the base, glass cutting :means .on and extending laterally outwardly from said second part beyond the corresponding side of the base and rollers arranged in the registering grooves and rollable therealong, said rollers being of sufficient diameter to extend in both of the registering grooves. .r

:3. A cutter for sheet glass, said cutter comprising a base for resting on the sheet glass, a longitudinal block on said base having one side spaced inwardly from the corresponding side of the base, said side of the block being formed intermediate its upper and lower edges with a longitudinal groove, and the top :of said block being formed with a longitudinal groove, a slide having a first part slidable'cn said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, saidislide including-a second'part depending from the first part andslidably engaging said side of the block and formed with a lon-' gitudinal groove registering with the groove in said side of the block,:a third partidepending from said second part and slidably engaging the top of the base, glass cutting means onandextending laterally outwardly from said second part be yond the corresponding'side of the :base and rollers arranged in the registering grooves and rollable therealong, said rollers beingof sufficient diameter to extend :in both of the registering grooves, the bottom .of the registering grooves in the top of the block and in the underside of said first part of the slide being in planes substantially parallel to the :top of the block, and the bottoms of the registering grooves in the side of the block and in said second part being in planes substantially at. right angles to the first mentioned planes, whereby substantial movemenis of the slide relative to the block other than relative longitudinal movements are positively prevented.

i. A cutter for sheet glass, said cutter comprising a base for resting on the sheet glass, a longitudinal block on said base having one side spaced inwardly from the corresponding side of the base, said. side of the block being formed intermediate its upper and lower edges with a longitudinal groove, and the top of said block being formed with a longitudinal groove, a slide having a first part slidable on said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, said slide including a second part depending from the first part and slidably engaging said side of the block and formed with a longitudinal groove registering with the groove in said side of the block, a third part depending from said second part and slidably engaging the top of the base, glass cutting means on and extending laterally outwardly from said second part beyond the corresponding side of the base, and rollers arranged :in the registering grooves and rollable therealong, said rollers being of sufiicientdiameter :to extend -in both of the registering grooves, thegrooves in the underside of said first part and insaidseoond part being relatively short and being definedbycrecesseshaving ends acting .as, stops to prevent the rollers ifrom having substantial longitudinal movement in said recesses.

5.. A cutter for .sheetglass, said cutter comprising a'baseiorrestingon the-sheetglass, a longitudinal'block on said base having one side spaced inwardly from the corresponding side-of :ihe base, said side of the block being formed intermediate its upper and :lower edges with a longitudinal groove, ,and the top of said block being formed with a longitudinal groove, a slide having a first part slidable on said top .of the block, the underside ;of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, said slide including a second part depending froin the first part and slidably engagingsaid side of the block and formed with a longi tudinal groove registering with the groove :in said a motor fixed on the upper portion of said slide,

and means operatively connecting said motor with the opposite side ofsaid block.

6. A cutter for sheet glass, said cutter com- I prising a base for resting on the sheet glass, a longitudinal block on said base having one side spaced inwardly from the corresponding side of the base, said side of the block being formed in tern e iate its upper andtlower edges with-alongitudinal groove, and the top of said block being formed with a longitudinal groove, aslide having a first part slidable-on said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, said slide including a second part depending from the first part and slidably engaging said side of the block and formed with a longitudinal groove registering with thegroove in said side or the block, a third part, depending from said second part and slidably engaging the top of the base, glass cutting means on and extending laterally outwardly from said second part beyond the corresponding side of the base, and rollers arranged in the registering grooves and rollable therealong, said rollers being of sufiicient diameter to extend in both of the registering grooves, an electric motor fixed on the upper portion of'said block, a rack connected to the side of said block opposite that having the longitudinal groove, and gearing connecting operatively to said rack.

'7. A cutter for sheet glass, said cutter comprising a base for resting on the sheet glass, a longitudinal block on said base having one side spaced inwardly from the corresponding side of the base, said side of the block being formed intermediate its upper and lower edges with a longitudinal groove, and the top of said block being formed with a longitudinal groove, a slide having a first part slidable on said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, said slide including a second Jil part depending from the first part and slidably engaging saidside of the block and formed with a longitudinal groove registering with the groove in said side of the block, a third partdepending from said second part and slidably engaging the top of the base, glass cutting means on and'extending laterally outwardly from said second part 'beyond the corresponding side of the base, and

rollers arranged in the registering grooves and rollable therealong, said rollers being of sufiicient diameter to extend in both of the registering grooves, an electric motor fixed on the upper portion of said block, a rack connected to the side of said block opposite that having the longitudinal groove, and gearing connecting operatively to said rack, contact rails carried on said rack, and contact brush means engaged with said contact rails and carried by a member extending laterally from said slide.

8. A cutter for sheet glass, said cutter comprising a base for resting on the sheet glass, a longitudinal block on said base having one side spaced inwardly from the corresponding side of the base, said side of the block being formed intermediate its upper and lower edges with a longitudinal groove, and the top of said blockbeingformed with a longitudinal groove, a slide having a first part slidable on said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the topof the block, said slide including a'second part depending from the first part and slidably engaging said side of the block and formed with a longitudinal groove registering with the groove in said side of theblock, a thirdpart depending from said second part and slidably engaging the top of the base, glass cutting means on and extending lat- V erally outwardly from said second part beyond the corresponding side of the base, and rollers arranged in the registering grooves and rollable therealong, said rollersibeing of sufficient diameter to extend in both of the'registering grooves, said glass cutting means comprising a pair of rods extending laterally outwardly from longitudinally spaced points on the outer side of said second part,

a body having end members slidably mounted on c said bars so asrto be laterally adjustable in a substantially horizontal plane, said body having a member on its outer end slidablyadjustable in a vertical plane, said member including a cutter groove, and the top of said block being formed with a longitudinal groove, a slide having a first part slidable on said top of the block, the underside of said first part with a longitudinal groove registering the longitudinal groove in the top of the block, said slide including a second part depending from the firstpart and slidably engaging said side of the block and formed with a longitudinal groove registering with the groove in said side of the block, a third part depending from said second part and slidably engaging the top of the base, glass cutting means on and extending laterally outwardly from said'seccnd part beyond the corresponding side of the base, and rollers arranged in' the registering grooves and rollable therealong, said rollers being of sumcient diameter to extend in both of the registering grooves, said glass cutting means comprising a pair of rods extending laterally outwardly from longitudinally spaced points on the outer side of said second part, a body having end members slidably mounted on said bars so as to be laterally adjustable in a substantially horizontal plane, said body having a member on its outer end slidably adjustable ina vertical plane, said member including a cutter element engageable with the sheet glass for cut-' body having a member on its laterally outward end slidably adjustable relative to the body in a vertical plane, said member including a cutter element engageable with the sheet glass for cutting the same, said element including a cutting point and vertically acting means connecting the same to said member.

THOMAS McDOWELL.