US2153443A - Lubricating device for cut-off knives - Google Patents

Description

April 4, 1939. B wELLNlTZ 2,153,443

LUBRIQATING DEVICE FOR CUT-OFF KNIVES Filed June 14, 1937 '3 Sheets-Sheet l 1N VEA/TOR BERNARD WELLmTz.

April 4, 1939. B WELLNITZ LUBRICATING DEVICE FOR CUT-OFF KNIVES Filed June 14, 1957 Hyg 3 Sheets-Sheet 2 BERNARD WELLN l rz.

April 4, 1939.

B. WELLNITZ LUBRICATING DEVICE FOR CUT-OFF KNIVES Filed June 14., 1937 s sheets-sheet 3 [Nl/ENTOR BERNARD WELLNITZ.

A T NE YS 15.14! (UIUC, 11!

Illlllhll r HIIIII MINI!!! l Ii "lll Il llllllll n gli n IIIIIIIIIIIHIIHIIM IIIIIIIIIJI ggg@ s Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE Bernard Wellnitz, Alton, Ill., assignor to Owens- Illinois Glass Company,

Ohio

a corporation of Application June 14, 1937, Serial No. 148,090

17 Claims.

The present invention relates to an apparatus for lubricating the cut-off knives of rotary bottle forming machines of the Owens type shown, for example, in U. S, Letters Patent No. 1,185,687, dated June 6, 1936.

In machines of the type set forth above, it is essential that the cut-olf knives, which travel with the molds and which rock across the bottom of the blank molds as the latter lift from the molten glass to sever the strings of glass which depend from the lower ends of the blanks when the same are gathered into the blank molds', be lubricated periodically in order that they may operate efficiently. Failure to lubricate the cut-off knives adequately results in an undue amount of friction between the knives and the bottom of the blank molds which in turn presents a great number of undesirable characteristics in the finished product as well as presenting numerous operating inefliciencies.

Amoung the undesirable characteristics presented in the finished product by failure to lubricate the cut-off knives, are the occurrence of filings, both from the cut-off knives and from the bottom of the blank molds, which fall into the supply pool of molten glass. In addition, rough cut-off scars appear on the finished articles due in a measure to the attendant deterioration of' the ordinarily sharp knife edges. Furthermore, because of the fact that the knives, when dull, fail to properly sever the tails or strings of glass from the charges in the blank molds, small particles of glass adhere to the knives and frequently spill over the edge of the furnace forehearth and nd their way into the articles contained in the finishing molds beneath the blank molds.

Among the operating inefficiencies presented by failure to adequately lubricate the cut-off knives, wear of the blank molds and the consequent necessity for frequent replacement thereof is the most serious. In addition, inability of the knives to remain sharp and give satisfactory service is a penalty for failure to lubricate the knives. Furthermore, direct damage to the nose of the blank mold by the cutting or scraping action of a dull knife is likely to occur should the knives remain not lubricated for a period of time.

Heretofore greasing or lubrication of the cutoff knives in machines of the type referred to has been accomplished manually by means of a swab in the hands of the operator of the machine. The time interval between successive greasing operations varies greatly, the operator applying lubricant to the knives whenever it occurs to him to do so, or when the character of the tails or strings issuing from the cut-off` knives is such that the matter is brought to his attention. No system of uniform lubrication of the cut-off knives has been successfully developed and consequently a considerable portion of the time of an operator that might well be devoted to other pressing matters is consumed in performing the relatively difficult, energy-consuming and timeconsuming operation of applying lubricant to the moving cut-off knives.

The principal object of the present invention is to provide a uniform system of lubrication for the cut-off knives in forming machines of the Owens type, and toward this end the invention contemplates the provision of a fully automatic lubricating apparatus which will relieve the operators of such machines of the responsibility of attending to the matter of knife lubrication.

'Ihe provision of such an apparatus which is capable of quick attachment to the machine which it is designed to serve and, more important,

vone which is also capable of quick detachment `therefrom in case of an emergency, and one which will effectively apply a uniform amount of lubricant to each and every cut-off knife once during each revolution of the machine, are further desiderata that have been borne in mind in the production and development of the present invention.

In the accompanying drawings:

Fig. 1 is a top plan View of the lubricating apparatus, showing the same applied to a forming machine of the Owens type.

Fig. 2 is an elevational view of the apparatus .with certain parts thereof shown in section and other parts thereof broken away to more clearly reveal the nature of the invention.

Fig. 3 is an enlarged fragmentary sectional View taken vertically and longitudinally through an attachment arm forming a part of the lubricating apparatus.

vratus shown in Fig. 5.

Fig. 8 is an enlarged end elevational view of `the apparatus, certain parts being broken away ,and others being shown in section to more clearly reveal the nature of the invention.

Referring now to Fig. 5, the lubricating appa- Iatus is mounted on a stationary platform 20 which is supported from the floor or foundation of the forming machine 2|. The platform 25 occupies a position adjacent the forming machine 2| close to the furnace (not shown) and on the approach side thereof. Y

The apparatus includes a supporting column 22 mounted on the free end of a link 23 which is hinged to a second link 24 which is` in turn hinged to a bracket 25 (see also Fig. 7) mounted on the platform 20. The upper end of the column 22 has mounted thereon a tubular supporting arm 26 which serves to support a major portion of the operative lubricating instrumentalities and the inner end of which is releasably attached (in a manner presently to be described) to an attachment block 21 (Figs. l to 4 incl. and l7) which is secured to the forming machine base 28 (Fig. 5).

By virtue of the releasable attachment between the tubular supporting arm 26 and the attachment block 21, and the folding link construction 23, 24, which serves to suppo-rt the column 22, the entire lubricating apparatus is movable toward and away from the forming machine and may assume the inoperative dotted line position indicated in Fig. 5. A coil spring 29 connected to the links 23 and 24. normally urges these two members into folded position when the apparatusis not attached to the attachment block 21.

Referring now to Figs. 3 and 4, the attachment means whereby the inner end of the supporting arm 26 may be releasably secured to the attachment block 21 consists of a squared flange 30 adapted toy abut against the outer face of the attachment block 21 and through which a pair of attachment pins 3| secured in the block 21 are adapted to extend. A sleeve 32 surrounds the supportingrarm 26 and has a pair of attachment lugs 33 which overlie the square flange and are adapted to extend into recesses 34 formed in the sides of the pins 3| and maintain the flange 30 in engagement with the face of the attachment block 21. Coil springs 35 which are disposed between brackets 36 secured to the flange 30 and respective lugs 31 formed on the sleeve 32 serve to apply a torque to the sleeve 32 in a clockwise direction, as viewed in Fig. 4, to urge the lugs 33 into engagement with their respective attachment pins 3| and maintain the apparatus in operative engagement with the forming machine -2|.

'Ihe tubular supporting arm 26 is secured to the upper end of the column 22 by means of bolts 40 which extend through a face plate 4| formed on the column and are threadedly received in a pair of lugs 42 that project through slots 43 provided in the sleeve 32. A lever 44 (see also Fig. 5) formed on the sleeve 32 extends upwardly therefrom and is accessible to the operator of the machine. Swinging movement of the lever 44 in a counter-clockwise direction, as viewed in Fig. 3, will serve to disengage the attachment lugs 33 from their respective attachment pins 3| and permit the entire apparatus to be moved automatically to the dotted line position of Fig. 5 with the links 23, 24, in their folded or collapsed position.

The outer end of the tubular supporting arm 26 serves to support thereon 'a three-way fitting 45 (Fig. 8) which carries at its upper end a vertically extending sleeve 46 provided with a slot 41 in the side thereof adjacent its top. A pair of lugs 48 (see also Fig. 2) formed on the sleeve 46 on opposite sides o-f the slot 45 serve to rotatably support therebetween a shaft 49 on which there is mounted a gear 5|] which meshes with a series of perforations 5| provided in an inner sleeve 52 which is disposed within the sleeve 46. A hand wheel 53 formed on the shaft 49 operates upon turning movement thereof in one direction orthe other to raise or lower the inner sleeve through the medium of the gear 5|) and perforations 5|. A collar 54 mounted on the upper end of the outer sleeve 46 is provided with a boss 55 through which there extends a locking bolt 55 having a handle 51 asso-ciated therewith. The locking bolt 56 serves to bind the inner sleeve 52 Within the outer sleeve 46 in any desired adjusted vertical position.

A central shaft 58 extends through the sleeve 52, is rotatable therein, and is capable of limited vertical sliding movement therein. The shaft 58 carries adjacent its upper end a head 60 (Figs. 8 and l2 which is provided with pairs of oppositely extending lugs 6|. A pair of oppositely extending radial swab-carrying arms 62 (see also Fig. l have their inner ends hingedly connected by means of pintles 63 to the lugs 6|. The free ends of the arms 62 have mounted thereon knife lubricating devices or swabs 64 which are in the form of lubricant absorbing pads and which are adapted to make successive contact with the upper surfaces of the cut-off knives of the forming machine to apply lubricant thereto. The shaft 58 is adapted to be periodically indexed or turned through an angle of one hundred and eighty degrees, in a. manner that will subsequently'be described to cause the swabs 64 to successively register with successive cut-off knives. In Fig. 1, one of the cut-off knives K is shown in its extended position swung outwardly from the bottom of the blank mold M with one of the swabs 64 in contact therewith during actual lubrication thereof.

The swabs 64 carried at the free ends of the arms 52 are normally supported in their circular path of movement slightly above the level of the extended cut-off knives K. Upon periodic indexing of the shaft 58, the swabs 64 are adapted to be moved over the extended cut-off knives successively and be lowered into engagement therewith in passing. Accordingly. each arm 62 1s provided with a depending stub shaft 65 (Figs, 2 and 8) carrying rollers 66 at its lower end. A cam member 61 having a cam surface 12 which is substantially circularlin form is carried at the upper end of the sleeve 52 and the rollers 66 are adapted to bear against the cam surface 12 under the influence of gravity as exerted by the outwardly extending radial arms 62 and under the influence of a pair of coil springs 68 connected to trunnions 69 carried by the stub( shafts 65 which tend to draw the stub shafts 65 inwardly and maintain the rollers 66 in constant engagement with the cam surface 12. The cam surface 12 is provided with a` flattened area 1li (Figs. l and l2) which is oriented directly toward the knife K at its precise moment of contact with one of the swabs 64. The rollers 65 are adapted to travel inwardly on the flattened area 10 to permit the arms 62 to dip momentarily and cause the swabs 6ft to descend upon the respective knives K which they are about to lubricate. Depressions 1I formed in the cam surface 12 provide a dwell position for the arms 62 and swabs 64 carried thereby between successive indexing operations of the shaft 58.

In order to protect the operator of the forming machine against accidental contact with the moving arms 62 and swabs 64, a guard or cage is designed to enclose these moving parts throughout a portion of their path of movement. The guard (Figs. l and 8) consists of upper and lower v vradially extending straps 14 and 15 respectively which are connected at their outer ends to an accurate strap 16. The inner ends of the straps 14 are connected to a ring member 11 surrounding the shaft 58 while the inner ends of the straps 15 are secured to the cam member 61.

Referring now t'o Figs. 8 and 13 wherein the mechanism for periodically indexing the shaft 58 is disclosed, the lower end of the inner sleeve 52 F serves to support a casting 88 by means of an integrally formed split collar connection 9| The casting 89 is provided with a chamber 82 therein which is closed by means of a cover plate 83. The shaft 58 extends downwardly through the casting 89 and chamber 82 and has secured thereyto above the casting 80 one element 85 of a ratchet type clutch. The other element of the clutch, which is a counterpart of the element 85, is in the form of a collar 86 loosely mounted on the shaft 58. The collar 86 is provided with a gear 81 integrally formed thereon which is in constant mesh with a sliding rack bar 88 (see also Figs. and 6) designed for reciprocation in the casting 88. A coil spring 89 disposed between the collar 86 and the lower end of the inner sleeve 52 serves to normally urge the two elements of the clutch 85, 86 into engagement. The collar 86 is provided with a flange 84 thereon and a finger 18 formed on a sliding clutch bar 19 mounted for vertical sliding movement in the casting 88 extends beneath the ange 84 for the purpose of lifting the collar 89 to disengage the clutch. The clutch bar 19 is actuated manually by means of a lever 13 (Fig. 11) pivoted to a bracket 59 formed on the castingand connected by a link 38 to the clutch bar 19. A spring detent mechanism 39 or catch serves to hold the clutch bar 19 in its elevated position to disengage the two elements of the clutch 85, 86.

The rack bar 88 is normallyy maintainedA in its retracted position by means of a coil spring 98 which bears at opposite ends thereof against a collar 9| and against a portion of the casting 80. The rack bar 98 is adapted to be periodically moved to its advanced or extended position by means of a pusher rod 92 which is in alignment therewith and which is supported in bearings 93 carried by the attachment block 21. The inner end of the pusher rod 92 is connected by means of a pin and slot connection 94 (Figs. 5 and 6) to an eccentric point on a disk 95 which is mounted upon a shaft 96 journalled in the base 28 of the forming machine. The shaft 96 has mounted thereon a gear 91 which meshes with the driving gear 98 of the forming machine 2|.

From the above description of parts, it will be seen that when the apparatus is in operative position with respect to the forming machine 2|, the gear 91 and disk 95 are continuously rotated, thus imparting reciprocal motion through the pin and ytates turning thereof.

slot connection 94 to the pusher rod 92. Reciprocal motion is imparted to the rack bar 88 by means of the pusher rod 92 which periodically causes the bar to be advanced and by means of the coil spring 90 which serves to retract the rack bar 88 each time the pusher rod 92 is withdrawn. Reciprocation of the rack bar 88 causes the gear 81 which is in constant mesh therewith to be rotated alternately in opposite directions, thus periodically indexing the shaft 58 lby causing it to be turned through an angle of one hundred and eighty degrees. Each movement of the shaft 58 causes the radial swab-carrying arms 62 to be rotated from one position of dwell throughout one hundred and eighty degrees to the other position of dwell as determined by the depressions 1i (Fig. 12) provided in the cam 61.

The movement of the arms 62 between each position of dwell is such that one of the swabs 64 passes and lubricates one of the cut-olf knives K as previously described while the other swab 64 passes, contacts, and receives lubricant from a lubricant feeder |89 (Figs. 1, 2, 8 and 9). The

lubricant feeder |99 is in the form of a hollow.

by way of a flexible conduit |03 and passes Outn wardly through the spool-like feeder through apertures |99 provided therein. The feeder |00 is positioned in the path of movement of the swabs 69 and the upper surface thereof extends slightly above the plane of movement of the u swabs. dwell to the other, the swabs corne into contact with the feeder |98 and receive lubricant therefrom.

In order to maintain a uniform supply of lubricant in the lubricant feeder |98, the lower end of the flexible conduit |83 communicates with the interior of a lubricant reservoir 99 through the stem |65 of a stationary piston |06. The piston |96 and stem |95 are held stationary by means of an outwardly extending supporting arm |91 formed on the collar 54 and by means of which the stem |85 is supported. The lubricant reservoir 99 is in the form of an open-ended cylinder in which the piston |96 is disposed. Means is provided for gradually moving the cylinder 99 upwardly with respect to the piston |86 in order to force lubricant through the piston |96, stem |95 and conduit m3 to the lubricant feeder |99. Accordingly, the cylinder 99 is vmounted on the upper end of a vertically extending shaft |93 which is supported for rotation 1n the casting 89. The medial region of the shaft |99 is threaded and is designed for threaded engagement with internal threads provided in a split collar |89 (Figs. 10 and 1l). The sections of the split collar |99 are carried by arms III] which are mounted for swinging movement about the vertical axis of a bolt III which extends into the casting 88. section of the split collar |99 extends into a groove I I3 formed in a short rock-shaft I I4 which is supported in bearings I I5 formed on the casting 89. The grooves IIB are inclined with respect to each other in such a manner that rocking movement of the shaft II4 in one direction or the other will cause the split collar |99 to open or close, as the case may be, as the fingers II2 follow the paths provided by the grooves I I3. A handle IIS formed on the rock-shaft IIA facili- From the above descrip- Thus, in passing from one position ofr A nger II2 formed on each v tion, it will be seen that upon opening of the split collar |09, the threaded portion of the shaft |08 is released and the lubricant cylinder 99 may be lowered for the purpose of refilling the same.

VMeans is provided for periodically turning the shaft |08 at selected rates of speed to cause the lubricant cylinder 99 to be fed upwardly with respect to the piston |06 in order that lubricant may be fed to the feeder as required. Toward this end, the lower portion of the shaft |08 has splined thereto a gear |20 (Figs. 8 and 13) which is in constant mesh with a plurality of gears |2|, |22 and |23 which are mounted upon and secured to the lower ends of respective shafts |24, |25 and |26 which are rotatably journalled in a substantially triangular plate |21. The plate |21 is pivoted for swinging movement about the axis of the shaft |08. The upper ends of the shafts |24, |25 and |26 have secured thereto respective gears |28, |29 and |30 of decreasingly smaller size and ofvarying elevations. These latter gears are adapted upon angular adjustment of the plate about the axis of the shaft |08 to selectively be placed in mesh with respective gears |3 I, |32 and |33 which are mounted on the shaft 84 adjacent the lower end thereof. The gears |3|, 32 and |33 are of increasingly larger size and thus. it will be seen that intermittent rotary motion of the shaft 84 may selectively be transmitted to the shaft |08 at selected speed ratios from any one of the three gears |3I, |32 or |33 through the respective gears |28, |29 or |30 which are designed for contact therewith and through one of the gears |2|, |22 or |23 as the case may be to the gear |20. In order to effec-t angular adjustment of the triangular plate 21 to vary the speed ratio between the shafts 84 and |08, the plate |21 has formed thereon an arm |35 which carries at its outer end a spring pressed pin |36 designed to be selectively received in any one of a plurality of holes |31, |38 or |39 provided in a iiange |40 formed on the casting 80.

In the operation of the lub-ricating apparatus, the lubricant reservoir or cylinder 99 (Fig. 8) is initially iilled with a lubricant suitable for application to the cut-off knives K (Fig. 1) of the forming machine 2 I. This operation is performed by turning the handle ||6 (Figs. 8, 10 and 11) in such a manner that the fingers ||2, in following the inclination of the grooves ||3 formed in the shaft ||4, are spread apart, thus opening the split collar |09 and releasing the threaded portion of the shaft 08. The reservoir 99 may then be lowered to clear the piston |06 in order that lubricant may be placed in the interior thereof. The filled reservoir is reapplied to the piston |06 and the split collar |09 is closed over the threaded portion of the shaft |08.

After the reservoir 99 has been filled, the entire apparatus is moved toward the forming machine 2| and the square flange 30 (Figs. 3 and 4) is brought to bear against the block 21. The pins 3| pass through the apertures provided in the square flange 30 and the lugs 33 automatically fall into position in the recesses 34 formed in the pins 3| to lock the apparatus in operative position. In so moving the apparatus from an out of the way position toward the forming ma.- chine 2|, the links 23 and 24 (Figs. 2) become extended against the action of the coil spring 29.

After the apparatus has been thus moved into its operative position, the height of the central shaft 58 is adjusted by manipulation of the hand wheel 53 (Fig. 2) so that the swabs 64 occupy a position slightly above the level of the cut-off knives K when the latter are extended. In this manner the swabs 64 will descend upon the knives to properly apply lubricant thereto in the manner previously described when the cam rollers 66 (Fig. 8) ride inwardly upon the flattened area 10 of the cam surface 12.

Operation of the lever 13 (Figs. 8 and 1l) causes the detent 39 to become disengaged and the clutch bar 19 to be lowered to permit the upper clutch element or collar to descend upon the lower clutch element 85, thus setting the various gears contained within the chamber 82 into motion. The proper gears |28-|3|, l29-l32, or ISO-|33, are selected for engagement to eiect the desired speed ratio between the central shaft 58 and the shaft |08 and control the rate of advancement of the reservoir or cylinder 99 onto the piston. Attainment of the desired speed ratio is eiected by properly locating the pin |36 in one of the holes |31, |38 or |39 and imparting to the triangular plate |21 the proper angular adjustment about the aids of the shaft |08.

Rotary motion of the forming machine gear 91 (Fig. transmits reciprocal motion to the pusher rod 92 through the pin and slot connection 94. The pusher rod 92 periodically extends the rack bar 88 while the coil spring 90 Vperiodically returns the same to its normal position and thus the rack bar 83 is caused to reciprocate. Reciprocation of the rack bar 88 imparts turning movement alternately in opposite directions to the gear 81 (Fig. 8) formed on the collar 86. During rotary movement o-f the gear 81 in one direction, the two elements. 85, 86 of the ratchet clutch slip upon each other, but during rotary movement of the gear 81 in the other direction the element 85 is caused to rotate, thus turning the shaft 58 and causing the swab-carrying arms 62 and swabs 64 to be moved or turned through an angle of one hundred and eighty degrees. The swabs thus pass over the cut-off knives successively and, as the rollers `66 ride onto the iiattened area (Fig. l2) the swabs are lowered into engagement with the knives K to apply lubricant thereto. The swabs also pass over the lubricant feeder |00 in succession during alternate movements of the shaft 58 and receive lubricant therefrom for application to the cut-off knives K.

Simultaneously with the operation of the swabcarrying arms 62 and swabs 64, the lubricant reservoir 99 is periodically advanced upon the piston |06 through the medium of the various gears contained within the chamber 82, as previously described, and lubricant is forced upwardly through the flexible conduit |03 to the lubricant feeder |00 for application to the swabs 64.

It is to be noted that when the lubricating apparatus is in its operative position in close proximity to the forming machine, the lever 44, which serves to release the latch mechanism 44, 34, which holds the supporting arm 32 in engagement with the attachment block 21 against the action of the coil spring 29, extends upwardly alongside the machine just outside the periphery thereof and is operable to release the latch mechanisms 44, 34, upon movement thereof in the direction of the molds and other moving parts of the forming machine. Thus, if struck by any moving part of the forming machine or by an object or person on the forming machine, the lever would release the latch mechanisms 44, 34, and permit the entire lubricating apparatus to be automatically moved bodily under the iniiuence of the coil spring 29 to an out of the way position as indicated by the dotted lines of Fig. 5.

Modifications may be resorted to within the vspirit of the appended claims.

' ,said knives for applying lubricant thereto, and

means for moving said swab into contact with successive knives when the latter are out of glass severing position.

2. The combination with a rotary glassware forming machine having an annular series of blank molds, a cutfoif knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of lubricant carrying swabs designed for engagement with said knives for applying lubricant thereto, and means for moving said molds, cutoff knives and swabs in unison so that the swabs register and contact in succession with successive cut-off knives when the latter are out of glass ^severing position.

3. A lubricating apparatus for applying lubricant to the cut-off knives of a rotary glassware forming machine comprising a stationary lubricant feeder, a lubricant transferring device adapted to transfer lubricant from said feeder to suc- 'said feeder, a lubricant transferring device operable upon rotation of the machine, adapted to transfer lubricant from said feeder to the knives one at a time, and means synchronized with the movement of said forming machine for periodically actuating said lubricant transferring device.

5. The combination with a rotary glassware forming machine having an annular series of blank molds, a cut-olf knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of movable lubricant carrying swabs designed for engagement with said knives for applying lubricant thereto, a lubricant feeder positioned in the path of movement of said swabs and adapted to be contacted by said swabs upon movement of the latter, and means for moving said molds, cut-off knives and swabs in timed relation so that the swabs successively contact said feeder and register and contact in succession with successive cut-off knives when the latter are out of glass severing position.

6. rIhe combination with a rotary glassware forming machine having an annular series of blank molds, a cut-off knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of lubricant carrying swabs designed for engagement with said knives for applying lubricant thereto, and means synchronized with the rotary movement of said forming machine for periodically moving said swabs in succession into conytact with successive cut-oir knives when the latter are out of glass severing position.

7. The combination with a rotary glassware forming machine having an annular series of blank molds, a cut-off knife for each mold and means for actuating the knife to sever glass in the mold from a supp-ly body, of a plurality of radially extending arms mounted for rotation about an axis parallel to the axis of rotation of said forming machine, a swab carried by each arm and adapted upon rotation of said arms to contact and register with successive knives of the forming machine when the latter are out of glass severing position, and meansoperable upon rotation of said forming machine vfor rotating said arms.

8. The combination with a rotary glassware forming machine having an annular series of blank molds, a cut-off knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of radially extending arms mounted for rotation about an axis parallel to the axis of rotation of said forming machine, a swab carried by each arm and adapted upon rotation of said arms to contact and register with successive knives of the forming machine when the latter are out of glass severing position, and means operable upon rotation of said forming machine for rotating said arms in a direction opposite to the direction of rotation of said forming machine.

9. The combination with av rotary glassware forming machine having an annular series of blank molds, a cut-off knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of radially extending arms mounted for rotation about an axis parallel to the axis of rotation of said forming machine, a. swab carried by each arm and adapted upon rotation of said arms rto contact and register with successive knives of the forming machine when the latter are out of glass severing position, a lubricant feeder positioned in the path of movement of said swabs and adapted to be contacted by said swabs upon rotation ofsaid arms, and means operable upon rotation of said forming machine for rotating said arms.

10. A lubricating apparatus for the cut-off knives of a rotary glassware forming machine comprising a stationary lubricant feeder, means operable upon rotation of said forming machine for periodically feeding a predetermined quantity of lubricant to said feeder, and means for transferring lubricant from said feeder individually to successive cut-off knives of said forming ma.- chine.

11. A lubricating apparatus for the cut-off knives of a rotary glassware forming machine comprising a stationary'lubricant feeder, means operable upon rotation of said forming machine for periodically feeding a predetermined quantity of lubricant to said feeder, means for transferring lubricant from said feeder individually to successive cut-olf knives of said forming machine, and means for varying the amount of lubricant periodically fed to said feeder.

l2. The combination with a rotary glassware forming machine having an annular series of blank molds and a. cut-off knife for each blank mold, of a stationary lubricant feeder, a lubricant transferring device movable repeatedly into contact with said feeder to receive lubricant therefrom and movable thereafter into contact with successive cut-off knives of said forming machine, and means synchronized with the rotary movement of said forming machine for moving said lubricant transferring device.

1B. The combination with a rotary glassware forming machine having an annular series of blank molds, a cut-off knife for each mold and means for actuating the knife to sever glass in the mold from a supply body, of a plurality of radially extending arms mounted for rotation about an axis parallel to the axis of rotation of said forming machine, a swab carried by each arm and adapted upon rotation of said arms to contact and register with successive knives of the forming machine when the latter are out of glass severing position, means operable upon rotation of said forming machine for rotating said arms, and means for adjusting the height of said arms.

14. TheV combination with a rotary glassware forming machine having an annular series of blank molds and a cut-ofi knife for each mold, of a lubricating apparatus for applying lubricant to vsaid vcut-off knives comprising a vertical shaft mounted for rotation about an axis parallel to the axis of said forming machine, means synchronized with the movement of said forming machine for periodically indexing said shaft to turn the same through an angle of one hundred and Veighty degrees, a pair of oppositely extending radially disposed arms mounted on said shaft, a lubricant applying device mounted on the outer `end of each arm, a stationary lubricant feeder mounted in the path of movement of said devices and adapted upon successive indexing operations of said shaft to be engaged by said devices alternately to feed lubricant thereto, said devices being adapted upon successive indexing operations of said shaft to alternately contact successive cut-off knives on said machine to apply `mounted for rotation about a vertical axis parallel to the axis of said forming machine, means synchronized with the movement of said forming machine for periodically indexing said shaft to turn the same through an angle of one hundred and eighty degrees, a pair of oppositely extending radially disposed arms mounted on said shaft, a lubricant applying device mounted on the outer end of each arm, a stationary lubricant feeder mounted in the path of movement of said devices and adapted upon successive indexing operations of said shaft to alternately be engaged by said devices to feed lubricant thereto, said devices being adapted upon successive indexing operations of said shaft to alternately contact successive cut-off knives on said machine to apply lubricant thereto, and means operable upon each indexing operation of Said shaft for feeding a measured quantity of lubricant to said feeder.

16. The combination with a rotary glassware forming machine having an annular series of blank molds and a cut-off knife for each mold, of a lubricating device for applying lubricant to said cut-off knives comprising a shaft mounted for rotation about a vertical axis, means synchronized with the movement of said forming machine for periodically indexing said shaft to turn the same throughout an angle of one hundred .and eighty degrees, a pair of oppositely extending radially disposed arms mounted on said shaft, a lubricant applying device carried by each arm, said devices being adapted upon successive indexing operations of said shaft to alternately engage successive cut-off knives on said machine to apply lubricant thereto, and means operable upon indexing of said shaft to apply lubricant to said devices.

17. The combination with a rotary glassware forming machine having an annular series of blank molds and a cut-oif knife for each mold, of a stationary lubricant feeder, a lubricant transferring device adapted to engage said feeder to receive lubricant therefrom and to transfer said lubricant to successive cut-01T knives on said machine, means for actuating said device in timed relation to the movement of said machine, and means operable upon actuation of said device for feeding measured quantities of lubricant to said feeder. Y Y

BERNARD WELLNITZ.

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