DE1685001A1 - Lubricating device for sewing machines - Google Patents

Description

Ui 22 163/66 4 / flfIö

The Singer Company,

Elizabeth, New / 3ersey (V.St.A.)

Lubricating device for mowers.

The invention relates to devices for lubricating ν / απ sewing machines and more particularly to one Lubricating device for intermittently operated industrial sewing machines β

There has been no effective means of lubricating an intermittently operated industrial sewing machine to disposal. In those sewing machines in which an oil pump is used, there is a noticeable delay present between the time at which the sewing machine is initially operated and the time at which the DI reaches the points to be lubricated »If a sewing machine is used so that it only works a few in an intermittent operation btichR sews, it is possible that the sewing machine has the runs all day without receiving a drop of Ql. Falls; an intermittently operated sewing machine is continuously lubricated between dun work cycles

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they more oil than can be effectively removed, whereupon there is a risk that excess oil will accumulate on the goods to be sewn

In addition, there are problems with acceleration and the delay of the actuation means or drive « means for the pump have occurred which cause the pump to generate variable or variable oil pressures. If the oil pressure is too high, there is a risk that excess oil will accumulate on the uiaren to be sewn «, U / hen the oil pressure is too low, the moving ones suffer Parts of the sewing machine »

Therefore, one object of the invention is to create a lubricating device or "lubricating system" for intermittently operated sewing machines, in which a lubricant is maintained under pressure regardless of the work of the sewing machine and for its application to lubricant-absorbing parts of the sewing machine at the same time holds the start of the operation of the sewing machine in ^a ereitschaft "

Another object of the invention is to provide a lubricating device or a lubricating system for an intermittently operated sewing machine, in which lubricant is supplied to the lubricant receiving parts of the sewing machine under a predetermined constant pressure _{or the like}

Further features of the invention emerge from the following

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constricting disclosure, in which a Ausführungsforin of the invention is described, for example, _"o Figure 1 is a side view of a device,

which are used to carry out the invention in connection with a sewing machine can.

FIG _o 2 is a longitudinal sectional view through the filitte the housing for the pump shown in Fig, "I.

FIG. 3 is a perspective schematic view of the internal oil circuit of the pump partially shown in FIG.
Fig ₀ 4 is a partial sectional view taken along line 4-4

of Fig _e Io

FIG _o 5 is a partial sectional view taken along line 5 "5 of FIG _e Ij wherein the inner oil circuit is shown in dashed lines _o

The following is an apparatus for carrying it out of the invention, however numerous other details may form part of the practice of the invention uses icerden.

Genin FIG _c 1 is a pump housing 10 with an end fiiner power transmission device 11 for an industrial sewing machine 12 associated lasbar The pump housing 10 can. j-, a Mluminiumgußstück exist, the cooling fins 13 tj extending from its outer surfaces.

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The releasable connection can have screws (not shown) which connect the pump housing IG to the power transmitter 11 connect *

Referring to FIG ₀ 2 is a horizontal drive shaft 14 near the upper end of the pump housing 10 in an intermediate storage IB and an end or end bearing 16 rotatably angaordneto An apertured bearing cover 17 is connected to the outside of the pump housing IU via the bearing opening for the intermediate storage 15 , and a measuring bearing cover 18 is connected to the outside of the pump housing lü via the bearing opening for the end bearing. One end of the horizontal drive shaft 14 protrudes through the opening in the bearing cover 17 with the opening and is rotatably connected to the drive shaft of the force transmitter 11 for the sewing machine 12 by an Oldham coupling, not shown. A horizontal bevel gear 20 is connected to the horizontal drive shaft 14 within the pump housing 10 by one or more adjusting screws 21 »

Below the horizontal drive shaft 14, a pump 22 is arranged on a hardened metal bearing surface 23 on the bottom of the pump housing 10 by means of screws 24. It should be pointed out here that other means of generating a lubricant pressure could also be used for carrying out the invention instead of the pump ? .2 .

The pump « '.', ' Unth'ilt a PurnpriMHKl .itf ^ nhnrod Ιίίϊ,

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a pump drive gear 26 and a pump inlet gear wheel 27, which is connected to a vertical Auslaßwelle 28, a vertical drive shaft 29 and a vertical inlet shaft 30, "A ^ vertical bevel gear 31 is connected to the upper ^L walls of the vertical drive shaft 29 is connected by one or more set screws 32 and combs with that

horizontal bevel gear 20, which with the horizontal A

Drive shaft 14 is connected »A disk 33 is between the vertical bevel gear 31 and the upper end of the pump 22 ziuischenlacea the vertical drive shaft 29 has a portion 34 of reduced cross-section, which forms a chamber within the pump 22, which is lubricated with " central openings 35 is in communication, which extends through the side wall of the pump 22 extend therethrough, The interior 36 of the pump housing 10 around the pump

22 serves as a storage container for oils An airtight, transparent

The visible opening 37 is provided in the inlet side 3B of the pump housing 10 for observing the oil level in the interior 36 of the pump housing 10. A removable housing cover 39 is connected to the top of the pump housing by means of screws 40, and a seal or joint 41 is provided between the cover 39 of the housing and the upper end of the pump housing 10 to hermetically seal the interior 36 of the pump housing 10. A filling cap (not shown) can be provided in the casing of the housing cover 39 in order to act as a means for adding oil to the urate container

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1683001

To serve inside 36 of the pump housing lü »

ilfle best shown in FIG _o 3, a vertical outlet conduit 42 extend, and a vertical Ausiaßrückführleitung 43 below the pitch line of the Pümpenauslaßzahnrades 25 and the pump drive gear 26, a vertical Einia & ieitung 44 and a vertical inlet Rückführieitung 45 extend below the pitch line of the pump drive gear 26 and the pump inlet gear 27 _O ^ in oil filter 46 is connected to one side of the pump 22 in the interior 36 of the pump housing 10 ,. The filter outlet 47 is open on the partial circle line of the Puiitpenauslaßzahnrades 25 and the pump drive gear 26 directly above the top of the vertical outlet return line 43 "

According to Figure "2 a rotatable Nebenschlußuentil is held by a plug 50 and a bushing 51 in a shunt valve chamber 49 48" The Rlebenschlußventil 48 has a Ausraß ~ l \ iebenschlußleitung _52? uueiche extends laterally from it and communicates with the vertical outlet line 42 and the vertical outlet return line 43 when the outlet bypass line 52 is arranged horizontally Inlet line 44 and the vertical inlet return line 45 in connection when the inlet secondary

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-Circuit line 53 arranged horizontally to-sammeii with the Auslaßnübenschlußleitung 52 is ₀ Three O '~ Ringabdich obligations 54, ·· and / elk rings extend around the shunt valve 48 which separate Auslaßnebenschlußleitung 52 .and the inlet bypass line 53 =

the pointed end 55 of the bypass valve 48 is pivotably mounted in a recess in the plug.

arranges, and the WBllendende 56 of the bypass valve 48 u / eist a crank 57, which with him by means of a Adjusting screw 58 is connected. The arm 59 of the crank 57 is with one end of an operating or control lever for the force transmitter 11 connected by a first connecting rod 61, as shown in FIG. The actuating lever 60 is in turn connected to a pedal for the sewing machine 1.2 through a second connecting rod 63 connected «

Referring to FIG _o 3 is a horizontal from "M extend laßleitung 64 and a horizontal outlet Fdbk ühr.leitung Ü5 of the vertical outlet duct 42 and the vertical Auslaßrückführleitung 43 to the outlet 66 of the pump housing 10. A horizontal inlet conduit 67 and a horizontal inlet return line 68 extend from vertical inlet line 44 and vertical inlet return line 45 to inlet side 38 of the pump housing. 10 <>

Fj g _f 1 is a very rüchtwinkliges_ RohrpaB-

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piece 69 connected to the end of the horizontal outlet line 64. An outlet pipe 70, which is made of plastic or other suitable material, is with the first right-angled adapter = 69 and a lubricant receiving part 71 connected within the sewing machine 12 »A pipe plug 72 is connected to the end of the horizontal Outlet return line 65 connected »

On the inlet side 38 of the pump housing 10 is \ a straight pipe fitting 73 with the end of the horizontal Inlet line 67 connected. An inlet tube 74 is connected to a stub 75 within the sewing machine 12 and the straight pipe fitting 73 connected »A second right-angled ^ Pipe fitting 76 is connected to the end of the horizontal inlet return line 68, and a third right angle Rchrpaßstück 77 is connected to the cover 39 of the Geau. A circulation pipe 78 is connected to the second Right Angle Pipe Fitting 76 and Third Right Angle Pipe Fitting 77 joined like outlet pipe 70 For example, the inlet tube 74 and the circulation tube 78 can also be made of a plastic or other suitable material.

Gernäß Tig «4 a V-shaped outlet valve chamber is formed near the outlet side 66 of the pump housing 10, The outlet valve chamber 79 is connected to the horizontal discharge line G-4 and the discharge return to / own BJ the . Aus-i.aßvf-nt-ilkamnier 79 with the lawful Auylaßrück-

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guide line 65 in connection. A first plug 82 is connected to the end of the outlet BO and an adjustable one Ball check valve 83 is at the end of the outlet return branch 81 connected «

The adjustable ball check valve 83 includes a ball 84 which extends against an opening at one end of the adjustable ball check valve 83 is pressed by a compression spring 8.5 »A first threaded plug 86 is in the other end of the adjustable ball check valve 83 is screwed in and lies against the pressure " spring 85. A 0 ~ ring 87 extends around the first Thread plug 86, - -. "

According to Figure 5 ₀ a V-shaped inlet valve chamber near the inlet side of Purnpsngehäuses 10 is formed. The inlet branch 89 of the inlet valve chamber 88 is in communication with the horizontal inlet line 67, and the inlet return branch 90 of the inlet valve chamber 88 is in communication with the horizontal inlet return line 68. A non-adjustable ball check valve 91 is connected to the end of the inlet connection 89 of the inlet valve chamber 88.The non-adjustable ball check valve 91 contains a ball 92 which is held against an opening at one end of the non-adjustable ball check valve 91 by an inelastic tube 93. A second threaded plug 94 is screwed into the other end of the non-adjustable ball check valve 91

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and rests against the inelastic tube 93. An O-ring 95 extends around the second threaded plug 94 » A second plug 96 is to the end of the inlet return branch 90 connected to inlet valve chamber 88 »

When operating, the drive shaft of the force transmitter 11, not shown, drives "as shown in FIG" 2, the horizontal drive shaft 14 in the pump housing 10 by an unillustrated Qldharn-Kupplurrg in the direction which is indicated by a first arrow 97 _o The horizontal drive shaft 14 in turn drives the vertical drive shaft "is shown indicated by a second arrow 98 on the pump drive gear 26 direction as shown in Figure" 3 "by the horizontal bevel gear 20 and the vertical bevel gear 31 in the 29 liienn the horizontal bevel gear 20 with the w _a agerechten drive shaft 14 the other side of the vertical bevel gear 31 is connected, W is the pump drive gear in a direction opposite the direction indicated by the arrow 98 direction rotated 26th However, assuming that the horizontal bevel gear 2D is connected to the horizontal drive shaft 14 as shown, then the pump outlet gear 25 and ^5, the pump inlet gear 27 are driven by the pump drive gear -26 in the direction indicated by a third arrow 99 and a fourth arrow IQG is indicated. The continuous rotary movement of the pump drive gear 26 through the drive shaft, not shown, of the transformer IJ

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causes the pump outlet gear 25 and the pump inlet gear 27 generate a constant lubricant pressure.

Referring to Fig. 3, it can be seen that oil flows from the reservoir inside 36 of the pump housing 10 and through the oil filter 46 to the partial circle line of the pump outlet gear 25 and the pump drive gear 26 by means of the Ulfiiterauslaß 47, from the partial circle line of the pump outlet gear 25 and the Pump drive gear 26 and the oil is transported around the circumference 101 of the pump outlet gear 25 to move down through the vertical outlet conduit 42. Since the rotational movement of the pump drive gear 26 decreased an area. As pressure is generated in the outlet bypass line 52, the oil travels through the outlet bypass line 52 and up through the vertical outlet return line 43 to bypass down _o A similar downward circulation occurs through the vertical inlet M line 44, through the inlet bypass line 53, up the vertical Inlet return line 45 and around the circumference 102 of the pump inlet gear 27 the oil circulation through the outlet bypass valve 52 and the inlet bypass valve 53 ensures that oil under pressure is available for immediate application to the lubricant receiving parts 71 of the sewing machine 12 _{or the like}

Ulenn now somehow Fig _c 1 the working of the sewing machine by irr. ', »Ι- on the pedal 62 eirinsl> ji fet ü; i," rd, to the

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To cause ztueite connecting rod 63 to pull the actuation lever 60 down, so that energy is transmitted from the force transmitter 11 to the sewing machine 12, pulls the operating lever 60.simultaneously on the first connecting rod 61 down to the crank arm 59 down draw,. The rotational movement of the crank arm rotates the exhaust bypass conduit 52 to break its communication with the vertical exhaust conduit 42 and the vertical exhaust return conduit 43, and rotates the intake bypass conduit 53 to break its communication with the vertical intake conduit 44 and the vertical intake return conduit 45, such as _{= shown} in Fig _o 3 is β ■ ■

UJenn the outlet bypass line 52 and the inlet bypass line 53 are shut off, the oil in the vertical outlet line 42 is out of the horizontal Outlet line 64 pushed out and through the outlet pipe to the lubricant receiving device 71 in the sewing machine 12 pressed, uiobei it is already under pressure (compare Fig. 1) »Ql, which is in the, swamp 75 accumulates in the sewing machine 12 is caused by the intake pipe 74, through the horizontal inlet line 67, upwards the vertical inlet conduit 44 and around the circumference of the pump inlet gear 27 and is sucked downward along the vertical inlet return line 45 from which horizontal inlet return line 68 and through the re-

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is circulating pipe 74 to the reservoir 36 inside the pump housing 10, ufie shown in Figure 3 is pressed _o "

The adjustable Kugelrückschlagv / alve 83 is adjusted by rotating the first thread-topfsns 86, in order to change the length of the compression spring 85 (see FIG. 4) _e of the pressure of the pressed-out from the horizontal outlet duct 54 oil which turned If according to FIG «3 previously If the pressure setting of the adjustable ball check valve 83 is exceeded, the compression spring 85 is overcome, and the (Jl, u / elches exceeds the previously set pressure, flows through the opening in the top of the adjustable ball check valve 83 and back through the horizontal outlet return line 65 and up through vertical outlet return line 43 to recirculate.

Caused to these lUeise the continuous rotation of the pump drive gear 26 (not shown) through the drive shaft of the power transmission device 11 that the Pumpenauslaßzahnrad 25 and the pump inlet gear 27 a constant lubricant pressure produce _e The Zierkulation of oil through the Auslaßnebenschlußvantil 52 and the inlet bypass valve 53 ensures that under Pressurized oil is ready for immediate application to the lubricant take-up device 71 of the sewing machine 12. The adjustable ball check valve 83 provides a means for setting the maximum constant

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Print for the Dl.

An apparatus for carrying out the invention has been described in detail above ^ this embodiment however, it is only one example of the invention and numerous Changes in the structure and in the details as well in the composition can within the scope of the invention be taken.

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Claims (1)

- 15 · - ■ ■. ■ Claims Io lubrication device for intermittently operated Sewing machines with a control device for initiating and stop working on the sewing machine, lubricant mounting parts, as well as a lubricant pressure generating device and a conduit connected between the outlet the lubricant pressure generating device and the Lubricant receiving parts is connected, characterized in that that the lubricant system parts (52 and 53) for the continuous maintenance of a lubricant " pressure in the lubricant pressure generating device (25, 26 and 27) regardless of the work of the mower (12), and bypass valve means (4-8) in parallel to the line (70) provided and with the control "-" or regulating device (62, 63 and 60) of the sewing machine (12) connected are to a flow van of pressurized lubricant through the line (70) at the same time as the mower (12) starts working « 2c lubrication device for intermittently actuated Sewing machine according to claim 1, characterized in that that a sump (75) and a second conduit (74) are provided, soft to / ischen the sump and the inlet 73 and 67) of the lubricant pressure generating device (25, 26 and 27) is connected « 3. Lubricator for intermittently operated 1 098 1 S / OSOO
ORIGINAL Sewing machine according to one of Claims 1 or 2, characterized in that it has an open valve (S3) parallel to the line (7ü) in order to set the maximum pressure of the lubricant from the device (25, 26 and 27) generating the lubricant pressure » 4o lubrication device for intermittently actuated Sewing machine according to Claim 3, characterized in that the second valve (83) is adjustable by hand. 1 09818 / OSOO BATH ORIGINAL L e r s e i t e