DE6932550U - BLOCKING LINE - Google Patents

Description

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Sch 221-69 - 2 -

The innovation concerns a chalk line dyer, which consists of a there is a coil stored in a closed housing, which can be rigidly connected to an externally operated crank, while the housing has an outlet which can be covered with an elastic disc with a cord passage opening.

The known chalk line dyers have the disadvantage that they are either very heavy and expensive or else in metal design are easily bendable in a lighter form and then become unusable. Embodiments made of metal and plastic combined however, have the disadvantage that the metal parts, which can also bend and also rust, like to get out of their Tear out the anchorage in the relatively softer plastic or break out parts when using brittle plastics so make the whole device unusable. Further disadvantages inherent in all previously known models are poor sealing on the spool shaft and also on the cord passage opening, which tears out and usually expands in a short time is. Reinforcement with metal eyelets is unsatisfactory because they have to be wider than the strength of the cord and therefore make a clean wiping off of the colored powder impossible.

The innovation is based on the task of training a chalk line dyer so that he can give me any which metal parts can be produced from impact-resistant plastic and at the same time the ease of movement of the coil and the

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Sch 221-69 - 3 -

secure sealing against color powder leakage, even for longer periods Service life is also guaranteed.

This object is achieved according to the invention in that the The shaft of the coil has a bore at one end which is flush with a pin cast on the inside of the housing base encloses, while its other end protrudes to the outside and is designed as a driver, on the one on with one Rotary knob provided housing cover inwardly directed molded socket can be pressed on by clamping, while between Housing cover and coil, a sealing plate is arranged which tightly encloses the socket in the middle and with its outer edge is designed to be clamped tightly to the upper edge of the housing base.

An embodiment of the innovation is shown in the drawing and is described in more detail below. Show it

Fig. 1 is a vertical section through the loose parts of the chalk line color before assembly,

2 shows a section through the design of the outlet in its individual parts before assembly,

3 shows a section through the ready-to-use device, but without a cord and without colored powder and

Fig. 4 is a plan view of the device according to Fig. 3, but with the housing cover not yet in place.

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Sch 221-69 - 4 -

In the usual form, the device has a housing base 1 in which the coil 2 can be sunk and its open side is covered with a housing cover 3. At one point of the frame of the housing bottom 1 is the outlet 4 arranged, which for example consists of a screw socket and carries a cap 5, which is ring-shaped and an elastic !!

Washer 6, e.g. made of soft rubber, tightly presses against the face of the screw socket 4. The disc 6 has a Cord passage opening 7, which is dimensioned a little narrower than the cord thickness, so that they have the excess of the Strips off any color powder that adheres to the cord.

Shaft 8 of the spool 2 has an opening 9 approximately in the middle of the spool, into which the end of the cord is firmly knotted can. The shaft 8 is expediently dimensioned to be relatively strong and, according to the innovation, has a bore Io that has one the inside of the housing base 1 surrounds the cast pin 11 flush. This end of the shaft 8 does not protrude the reel plate so that it is very close to the base of the housing can apply. However, it should not touch it, so that no friction which would impair the rotatability arises. That's why if this plate of the coil 2 and / or the housing base 1 has at least one annular reinforcement 12 that is straight strong enough to prevent the plate from rubbing against the bottom of the case, and weak enough to prevent a to prevent excessive penetration of colored powder. To this

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Sch 221-69 - 5 -

Purposes can also be provided on the edge of the reel plate with a suitable "dimensioned reinforcement, but in each
Trap only extends over a relatively small area.

The other end of the shaft 8 protrudes over the spool 2 and
is designed as a driver 13. In the example shown, this is designed as a square, onto which a socket 14 cast on the inside of the housing cover 3 can be pressed in a clamping manner. Your secure fit is guaranteed that
Both parts are disengaged with an interlocking recess, for example the driver 13 is provided with a groove 15 running all around and the bushing 14 is provided with a ring 16 that engages in this groove 15.

A sealing plate 17, which is centrally dimensioned in a relatively large area, serves to reliably seal off the coil space
Ring 18 opens and on the outer edge 19 in e ± ßn multi-step web
runs out, which engages in the provided with a corresponding annular groove upper edge 2o of the housing bottom 1 and thereby ensures a secure seal. The ring 18 on its side tightly encloses the socket 14 and it is also close to the inside of the housing cover 3 with its upper end face, so that even at the pivot point, an escape of colored powder is practically impossible even after a long period of use, since the sealing contact surfaces very large
are held.

932550

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Sch 221-69

The innovation according to the design of the housing cover 3 has the The advantage that "when winding up the entire, smoothly trained Lid surface rotates. This allows a smooth rotary movement without the fingers getting jammed in the crank or the cord can get tangled in the otherwise usual shaft crank attachment, unintentional kinking of the crank, etc. is possible were. In addition, the entire housing has a smooth exterior, which is very pleasant to use and also. can be kept very clean.

It is advantageous if the housing cover 3 has an outside to the housing base 1 slightly bent edge 21 is obtained, which is drawn close to the end face, but without it to touch. It is also advantageous if the rotary knob 22 forms a material unit with the housing cover 3 and is cast on this approximately in the form of a cylindrical projection. He can then be grasped easily and glides at Turning comfortably by the fingers without the usual disadvantages]] of loosely hinged crank parts that bend or break off or can come loose.

A particularly advantageous embodiment of the innovation is that between the elastic disc 6 and the Coil 2, an additional pre-scraper 23 is arranged, which has a passage coaxially to the cord passage opening 7 24, the clear width of which is roughly equal to the size of the cord.

Sch 221-69 - 7 ~

f. speaks. This passage is useful in the form of an Itirigsi

held, which by a certain amount - e.g. suspended in a funnel shape on several struts 25 - away from the disc 6 *

ρ is shifted inwards, so that this continues to be impeccable

which can move elastically in both directions. The pre-scraper 23,24,25 causes any adhering thicker ones Lumps of paint are stripped off before the cord reaches the passage opening 7, so that this does not occur prematurely

! j is expanded. In addition, the pre-scraper 23 also works

a firm guide of the cord and thus prevents anything Cutting or tearing the elastic disc 6,

! as was otherwise the case with the previous statements,

,, if the line becomes too tight when tensioned, pulled out or spooled

was stretched taut.

The advantages of the innovation are that the device does not contain any bendable or rusting parts, but its functionality unabated even after a long period of use maintains that his handling is more comfortable and safer than with the previous versions and that the hitherto inevitable Color powder escapes in the area of the spool shaft and elsewhere on the housing or the elastic disc prolonged use is prevented with certainty. Additional advantages are that the device is easy to keep clean and in achieving cleaner, more uniform lines than in the previously known embodiments.

Claims (1)

Soh 221-69 - 8 - PROTECTION CLAIMS: 1. / Chalk line dyer, which consists of a spool mounted in a closed housing, which can be rigidly connected to an externally operable crank, while the housing has an outlet that can be covered with an elastic disc with a line passage opening, characterized in that the shaft (8) the coil (2) at one end has a bore (lo) which surrounds a pin (ll) cast on the inside of the housing base (l), while its other end protrudes outwards and is designed as a driver (13) on the a socket (14) cast on the housing cover (3) provided with a rotary knob (22) facing inwards can be pressed on in a clamping manner, while a sealing plate (17) is arranged between the housing cover (3) and the coil (2), which centralizes the socket (14 ) tightly encloses and with its outer edge (ig) on the upper edge (20) of the housing base (l) is designed to be clamped tightly. 2. / chalk line dyer according to claim 1, characterized in that the driver (13) and the socket (14) each with one interlocking Forming (15,16) is equipped. &. / Chalk line dyer according to claim 1, characterized in that that the housing cover (3) has a downwardly drawn edge (2l) RM ei / * i »Ι il -9- Sch 221-69 - 9 - which, in the assembled position, is close to the face of the * i, The bottom of the housing (l) is sufficient, but without touching it, 4. / chalk line dyer according to claim 1, characterized in that at least one of the between the coil (2) and the housing base (l) touching surfaces at least one concentric annular reinforcement (12) is cast on, 5 "/ chalk line dyer according to claim 1, characterized in that that the sealing plate (17) merges centrally into a relatively large ring (18), the upper face of which in in the assembled position lies tightly against the inside of the housing cover (3). 6. / chalk line dyer according to claim 5, characterized in that the outer edge (19) of the sealing plate (17) as a multi-stage Web is formed, which is cut into one on the upper edge (2o) of the housing base (l) from the inside The ring groove engages in a sealing manner. 7. / chalk line dyer according to claim 1, characterized in that the rotary knob (22) in the form of an approximately cylindrical projection is cast on the housing cover (3). 8. / chalk line dyer according to one of claims 1 to 7, characterized characterized in that between the cord passage opening (7) - Io - Sch 221-69 - Io - and the coil (2) in the space of the outlet (4) a pre-scraper (23,24,25) is releasably attached. 9. / Schiagschnurfärber according to claim 8, characterized in that that the pre-wiper consists of a ring (23) which rests on the inside of the elastic disc (6) and which over to the Coil (2) directed towards struts (25) carries a second ring, the passage (24) in the clear width about the Corresponds to the size of the cord. The representative: GÜNTER LGEISS PATENT LENGTH TEUK RADOLF TENT / BODENSEE