GB2288612A

GB2288612A - Portable industrial sewing machine lubricating system

Info

Publication number: GB2288612A
Application number: GB9408010A
Authority: GB
Inventors: Shih-Hsiung Fang
Original assignee: FANG SHIH HSIUNG
Current assignee: FANG SHIH HSIUNG
Priority date: 1994-04-22
Filing date: 1994-04-22
Publication date: 1995-10-25
Also published as: GB9408010D0

Abstract

A portable industrial sewing machine, e.g. for sewing up bags, has a lubricating system comprising a manually operable oil pump (2) arranged to be interconnected with first and second oil lubricating devices. The first oil lubricating device communicates through a first pipe (21), spray nozzle (231) and wick (32) with a needle bar link (180). The second device communicates through a second pipe (22) and hole (132) with an elongated passage (101) extending axially through the transmission shaft (10) of the sewing machine. An absorbent cotton material (31) is located within the elongate passage for permitting the lubricating oil to permeate through a series of radially extending apertures (1021, 1031, 1041, 1051) interconnecting the inner passage with the external surface of the transmission shaft to lubricate other parts of the transmission mechanism. <IMAGE>

Description

PORTABLE INDUSTRIAL SEWING MACHINE LUBRTCATING SYSTEM This invention relates to a portable industrial sewing machine lubricating system.

The parts of the transmission mechanism of a portable industrial sewing machine for sewing up bags must be regularly lubricated so that they can work properly. However, it is not easy to lubricate all parts of the transmission mechanism such as the eccentric shaft holder, the eccentric shaft, the cam, the inner and outer sockets, the link, etc. According to conventional methods, these parts are lubricated one after another, and the shell of the sewing machine must be opened before the lubricating process.

The present invention has been accomplished to provide a lubricating system for n portable industrial sewing machine which substantially alleviates the aforesaid problems. The lubricating system automatically lubricates the parts of the transmission mechanism of the sewing machine by means of the operation of a hand oil pump. When the hand oil pump is operated, the lubricating oil is partially guided through a first oil tube and driven out of a nozzle to lubricate the needle bar link, and partially guided through a second oil tube into an elongated hole on the transmission shaft of the transmission mechanism of the sewing machine for absorption by an absorbent cotton for permitting the lubricating oil to permeate through a series of oil holes to lubricate the other parts of the transmission mechanism of the sewing machine.

An embodiment of the present invention will now be described by way of example with reference to the accompanying drawings, in which: Fig. 1 is a front view of a portable industrial sewing machine made according to the present invention; Fig. 2 is a sectional view of the portable industrial sewing machine shown in Fig. 1; Fig. 3 is similar to Fig. 2 but showing the route of the lubricating oil system therein; and Fig. 4 is a sectional view of the eccentric shaft holder, the eccentric shaft, and the transmission shaft.

Referring to the various drawings attached herewith, a detailed description of the structural features of a portable industrial sewing machine lubricating system of the present invention is as follows: Referring to Figs. 1, 2, 3 and 4, the sewing machine 1 comprises a transmission shaft 10, a transmission gear wheel 12, an innter socket 13, an annular absorbent member 35, an eccentric shaft holder 14, an eccentric shaft 140, a cam 15, an outer socket 16, a machine base 17, a needle frame 18, a needle holder 19, a needle bar 191 mounted on the needle holder 19, a link 180 inserted through an axial hole 181 (not shown) on the needle frame 18, and a hand oil pump 2.

The transmission shaft 10 has an elongated hole 101 through the central axis thereof, an absorbent cotton 31 inserted in the elongated hole 101, a series of annular grooves 102; 103; 104; 105 spaced around the periphery thereof, a plurality of oil holes 1021; 1031; 1041; 1051 through the annular grooves 102; 103; 104; 105 for guiding the lubricating oil from the elongated hole 101 out of the transmission shaft 10 for lubricating the inner socket 13, the annular absorbent member 35, the axle hole 1402 on the eccentric shaft 140, the cam 15, the outer socket 16.

The eccentric shaft 140 has a plurality of axial holes 1401 inserted with a respective absorbent cotton 33 being respectively connected to the annular absorbent member 35. The hand oil pump 2 has a first oil pipe 21 and a second oil pipe 22. The first oil pipe 21 is coupled with a nozzle tube 23 terminating in a nozzle 231 for spraying the lubricating oil onto a hard absorbent member 32 being mounted on the top 143 of the eccentric shaft holder 14. The hard absorbent member 32 has an opposite end 321 inserted into a hole 1801 on the link 180. The second oil pipe 22 is inserted into a hole 111 on the shell 11 of the sewing machine 1 and connected to a through hole 132 on the inner socket 13. The through hole 132 has an opposite end connected to an oil guide hole 1021 on the transmission shaft 10 for guiding the lubricating oil to the absorbent cotton 31.

When the knob 20 on the hand oil pump 2 is depressed, the lubricating oil is partially guided through the first oil pipe 21 into the nozzle tube 23 and then driven out of the nozzle 231 onto the hard absorbent member 32 for permitting the lubricating oil to permeate into the hole 1801 on the link 180 for lubrication, and partially guided through the second oil pipe 22 into the through hole 132 on the inner socket 13 then into the elongated hole 101 on the transmission shaft 10 via the oil hole 1021 on the annular groove 102 for absorption by the absorbent cotton 31 permitting the lubricating oil to permeate through the oil holes 1031; 1041; 1051 into the axle hole 131 on the inner socket 13, the annular absorbent member 35, the axle hole 1402 on the eccentric shaft 140, the axle hole 151 on the cam 15, the axle hole 161 on the outer socket 16 to lubricate the periphery of the inner socket 13, the eccentric shaft 140, the cam 15, and the outer socket 16, and also permitting the lubricating oil to permeate through an oil hole 1403 on the eccentric shaft 140 for lubricating the axle hole 141 on the eccentric shaft holder 14.

Claims

CLAIMS:-

1. A portable industrial sewing machine lubricating system comprising a manually operable oil pump arranged to be interconnected with first and second oil lubricating means, the first said oil lubricating means communicating with a needle bar link of the sewing machine for lubricating the same, the second oil lubricating means communicating with an elongated passage extending axially through the transmission shaft of the sewing machine for absorption by an absorbent means located within the elongate passage for permitting the lubricating oil to permeate through a series of radially extending apertures interconnecting the inner passage with the external surface of the transmission shaft to lubricate other parts of the transmission mechanism of the sewing machine.

2. A portable industrial sewing machine lubricating system comprising a transmission shaft, a transmission gear wheel, an inner socket, an annular absorbent member, an eccentric shaft holder, an eccentric shaft, a cam, an outer socket, a machine base, a needle frame, a needle holder, a needle bar mounted on the needle holder, a link inserted through an axial hole on the needle frame, and a hand oil pump, wherein: the transmission shaft has an elongated hole through the central axis thereof, an absorbent cotton inserted in the elongated hole, a series of annular grooves spaced around the periphery thereof, a plurality of oil holes through the annular grooves for communication with the elongated hole of the transmission shaft; the eccentric shaft has a plurality of axial holes inserted with a respective absorbent cotton being respectively connected to the annular absorbent member; the hand oil pump has a first oil pipe and a second oil pipe, the first oil pipe being coupled with a nozzle tube terminating in a nuzzle for spraying the lubricating oil onto a hard absorbent member being mounted on the top of the eccentric shaft holder, the hard absorbent member having an opposite end inserted into a hole on the link, the second oil pipe being inserted into a hole on a shell and connected to a through hole on the inner socket, the through hole having an opposite end connected to an oil guide hole on the transmission shaft for guiding the lubricating oil to the absorbent cotton;; when the hand oil pump is operated, the lubricating oil is partially guided through the first oil pipe into the nozzle tube and then driven out of the nozzle onto the hard absorbent member for permitting the lubricating oil to permeate into the hole on the link for lubrication, and partially guided through the second oil pipe into the through hole on the inner socket then into the elongated hole on the transmission shaft via the oil hole on the annular groove for absorption by the absorbent cotton permitting the lubricating oil to permeate through the oil holes into the axle hole on the inner socket, the annular absorbent member, the axle hole on the eccentric shaft, the axle hole on the cam,the axle hole on the outer socket to lubricate the periphery of the inner socket, the eccentric shaft, the cam, and the outer socket, can also permittting the lubricating oil to permeate through an oil hole on the eccentric shaft for lubricating the axle hole on the eccentric shaft holder.

3. A portable industrial sewing machine lubricating system substantially as hereinbefore described with reference to, and as illustrated in the accompanying drawings.