CA1196151A - Lamp carriage arm for safety hats - Google Patents
Lamp carriage arm for safety hatsInfo
- Publication number
- CA1196151A CA1196151A CA000443713A CA443713A CA1196151A CA 1196151 A CA1196151 A CA 1196151A CA 000443713 A CA000443713 A CA 000443713A CA 443713 A CA443713 A CA 443713A CA 1196151 A CA1196151 A CA 1196151A
- Authority
- CA
- Canada
- Prior art keywords
- lamp
- arm
- safety hat
- carriage arm
- worker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/145—Adjustable mountings for portable lighting devices
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/0406—Accessories for helmets
- A42B3/0433—Detecting, signalling or lighting devices
- A42B3/044—Lighting devices, e.g. helmets with lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
A B S T R A C T
A lamp carriage arm, adapted for attachment to a safety hat, is disclosed. The lamp carriage arm offers improved lighting for miners and other workers by virtue of the lamp being positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone. The lamp carriage arm attaches at one end to one side of the safety hat, and extends downwardly in spaced relationship to the side of the safety hat wearer's head. Conventional lighting, e.g. a miner's lamp, is carried at the other end of the lamp car-riage arm. Preferably, the attachment of the lamp to the carriage arm is pivotal, so that the direction of the lamp beam may be varied. Thus the use of a ball and socket joint is disclosed, although other means may be employed. Adjust-ment means for varying the position of the lamp are also disclosed.
A lamp carriage arm, adapted for attachment to a safety hat, is disclosed. The lamp carriage arm offers improved lighting for miners and other workers by virtue of the lamp being positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone. The lamp carriage arm attaches at one end to one side of the safety hat, and extends downwardly in spaced relationship to the side of the safety hat wearer's head. Conventional lighting, e.g. a miner's lamp, is carried at the other end of the lamp car-riage arm. Preferably, the attachment of the lamp to the carriage arm is pivotal, so that the direction of the lamp beam may be varied. Thus the use of a ball and socket joint is disclosed, although other means may be employed. Adjust-ment means for varying the position of the lamp are also disclosed.
Description
This invention relates yenerally to safety equip-ment, and specifica]ly to a carriage arm adapted for attach-ment to a safety hat to support a miner's lamp or the li}ce.
In the prior art, it is well known to attach lamps to safety hats or helmets, particularly in the mining industry. In the case oE miners' lamps, the traditional location of the miner's lamp is on the front of the miner's helmet. This is shown in numerous previous patents, such as for example Canadian patents no. 80,858, no. 113,677, and no. 1,101,755, and United States patent no. ~,199,802, which are cited for general interest rather than for specific relevance to the present invention.
The problems with the traditional location for the lamp are numerous. In mining, the traditional location pro-vides fairly good illumination for a rock face of from tento thirty feet away from the miner. However, for close-up work such as that performed by mechanics, electricians, engineers, etc., the traditional location is less than satisfactory, since the cone oE illumination -tends to overshoot -the focus of the worker's attention. As a result, the worker frequently resorts to removing the lamp from the hat, and holding it in one hand to illuminate the work location. Frustration and inefEiciency are inevitable results, particularly if the work requires the use of both hands. ~inor injuries due to inadequate lighting in such situations are extremely common, and in ~act are presently considered to be almost an inevitable part of underground work.
In addition to the problems of the traditional lamp location in illuminating close-up work, there is an
In the prior art, it is well known to attach lamps to safety hats or helmets, particularly in the mining industry. In the case oE miners' lamps, the traditional location of the miner's lamp is on the front of the miner's helmet. This is shown in numerous previous patents, such as for example Canadian patents no. 80,858, no. 113,677, and no. 1,101,755, and United States patent no. ~,199,802, which are cited for general interest rather than for specific relevance to the present invention.
The problems with the traditional location for the lamp are numerous. In mining, the traditional location pro-vides fairly good illumination for a rock face of from tento thirty feet away from the miner. However, for close-up work such as that performed by mechanics, electricians, engineers, etc., the traditional location is less than satisfactory, since the cone oE illumination -tends to overshoot -the focus of the worker's attention. As a result, the worker frequently resorts to removing the lamp from the hat, and holding it in one hand to illuminate the work location. Frustration and inefEiciency are inevitable results, particularly if the work requires the use of both hands. ~inor injuries due to inadequate lighting in such situations are extremely common, and in ~act are presently considered to be almost an inevitable part of underground work.
In addition to the problems of the traditional lamp location in illuminating close-up work, there is an
2 ~.
even more serious problem in illuminating the ground in front of a miner when he or she is walking in the mine~ Slip and ~all injuries in mines are numerous, and it is well documented that inadequate lighting is a factor in many such accidents~ The miner must either wal]c with the ground not directly illuminated, or must walk with his or her head pointed downwardly, or must remove the light from the helmet and point it by hand. None of these is a satisfactory solution.
One solution which has been attempted is to increase the candlepower of the lamps. This does not attack the root of the problem, however, and the increased candlepower also produces increased glare. Glare is a problem at the best of times.
It is an object of the present invention to provide a lamp carriage arm for attachment of a lamp to a safety hat to avoid some of the problems associated with the prior art.
It is a further object of the inv~ntion -to provide improved safety hat mounted lighting for miners and others.
Thus in accordance with the present invention there is provided a lamp carriage arm, adapted for attachment at one end to one side of a safety hat to extend downwardly in spaced re-lationship to the side of the safety hat wearer's head~ The lamp carriage arm comprises an arm portion, firs-t attachment means at one end of the arm portion for attaching the arm portion to the safety hat, and second attachment means remote from the first attachment means for attaching a lamp for carriage roughly in the area of below the safe-ty hat wearer's eye level and above and in front of the sa~ety hat wearer's collarbone.
In accordance with another aspect o~ the inven-tion~
there is provided lighting apparatus adapted for attachment to a 5afety hat~ comprising a lamp carriage arm, attachment means at one end of the lamp carriage arm for attachment to one side of the safety hat, and a lamp attached to the other end of the lamp carriage arm, the carriage arm extending downwardl.y when attached to the safety hat, in spaced relationship to -the safety hat wearer's head, such that the lamp is positioned roughly in the area of below the safety hat wearer's eye level and above and in front o~ the sa~ety hat wearerls collarboneO
In accordance with yet another aspect of the invention, there is provided an illuminating safety hat, comprising a safety hat, a lamp carriage arm attached at one end to one side of the hat and extending downwardly in spaced relationship to the saEety hat wearer's head, and a lamp attached to the other end oE the lamp carriage arm so as to be positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
Other features of the invention will become apparent in the following detailed description of the preferred embodiment.
Reference will be madP to the accompanying drawings, provided by way oE e~ample only, in which:
Fig. 1 is an illustration of the preferred embodlment, showing the carriage arm and lamp installed on a sa.Eety hat;
FigO 2 is a rear view of the carriage arm and safety hat;
Fig. 3 is a view of lamp position adjustment means for the carriage arm;
Fig. 4 is a cross-section of a ball and socket joint in the preferred embodiment;
Fiy. 5 is an illustration of an alternative embodiment comprising a slotted slider riding in a channel in the carriage arm; and Fig. 6 is a view showing the channel in the carriage arm.
Referring now to the drawings, the preferred embodiment of the present invention will be described. A
carriage arm 1 is attached to a bracke-t on the side of a safety hat 2 by two bolts 32. The details of the a-ttachment will be described later. In the preferred embodiment, the carriage arm has a length of approximately 1~5 millimeters, a].though obviously there is a fair range of acceptable lengths.
A lamp support arm 4, including a ball and socket joint 7, is pivotally connected at one end to the lower end of the carriage arm, and supports a lamp 3 at its other end.
A threaded bolt 10 and a wingnut 12 clamp dlsc portions 14 of the carriage arm and lamp support arm together to lock the lamp support arm in position. The opposing faces 16 of the disc portions have serrations 17 to prevent slippage, as seen in Fiy. 3. A standard lamp bracket 5 is attached -to or integral with the socket portion of the ball joint, and the lamp 3 connects to it via a standard clip 9O A cable 15 is routed to a standard waist-car:ried ba-ttery pack (not illus-trated) which powers the light.
As illustrated in Fig. 4, the ball and socket joint preferably includes a sleeve 25 and a spring 26 within the ball to maintain -tension within -the join-t and thereby prevent slippage. Other means could of course be used to accomplish the same resultO
The attachment of the carriage arm to the safety hat will now be described in greater detail. The two bolts 32 shown in Fig. 1 are passed through holes in a bracket 34 manufactured by the Pel-tor AB of Sweden principally for the carriage of ear protectors. These brackets are commonly used in the mining industry, and are available in Canada from Norhammer Tools Co. Ltd., P.O.Box 2042, Highway 11, Graven-hurst, ~ntario P0C 1G0. Nuts 33 are threaded onto the bolts 32 and tightenecl to fasten the carriaye arm to the brac]et.
The bracket in turn is fastened securely to -the side of the safety hat.
If an ear protector is carriecl from the bracket, in accordance with its usual purpose, it can be accommodated inside and to the rear of the carriage arm, as can be seen from the outline of an ear protector ~0 in Fig. 1. As can be seen best from Fig. 2, the upper portion 20 of the carriage arm angles outwardly from the safety hat before bending at an angle of approximately 20 degrees to a more vertical angle at bend 21, thus creating a little more space for the ear protector. The brackets can be purchased as separate items, that is without the necessity of purchasing ear protectors in the event that ear protection is no-t desired as an aclditional feature.
~ s can be seen from Fig~ 1, the shape of the upper portion of the carriage arm is such in relation to the shape of the bracke-t that the carriage arm can be mountec1 on either of the t~Jo pairs of holes, 36 or 3~, in the bracke-t
even more serious problem in illuminating the ground in front of a miner when he or she is walking in the mine~ Slip and ~all injuries in mines are numerous, and it is well documented that inadequate lighting is a factor in many such accidents~ The miner must either wal]c with the ground not directly illuminated, or must walk with his or her head pointed downwardly, or must remove the light from the helmet and point it by hand. None of these is a satisfactory solution.
One solution which has been attempted is to increase the candlepower of the lamps. This does not attack the root of the problem, however, and the increased candlepower also produces increased glare. Glare is a problem at the best of times.
It is an object of the present invention to provide a lamp carriage arm for attachment of a lamp to a safety hat to avoid some of the problems associated with the prior art.
It is a further object of the inv~ntion -to provide improved safety hat mounted lighting for miners and others.
Thus in accordance with the present invention there is provided a lamp carriage arm, adapted for attachment at one end to one side of a safety hat to extend downwardly in spaced re-lationship to the side of the safety hat wearer's head~ The lamp carriage arm comprises an arm portion, firs-t attachment means at one end of the arm portion for attaching the arm portion to the safety hat, and second attachment means remote from the first attachment means for attaching a lamp for carriage roughly in the area of below the safe-ty hat wearer's eye level and above and in front of the sa~ety hat wearer's collarbone.
In accordance with another aspect o~ the inven-tion~
there is provided lighting apparatus adapted for attachment to a 5afety hat~ comprising a lamp carriage arm, attachment means at one end of the lamp carriage arm for attachment to one side of the safety hat, and a lamp attached to the other end of the lamp carriage arm, the carriage arm extending downwardl.y when attached to the safety hat, in spaced relationship to -the safety hat wearer's head, such that the lamp is positioned roughly in the area of below the safety hat wearer's eye level and above and in front o~ the sa~ety hat wearerls collarboneO
In accordance with yet another aspect of the invention, there is provided an illuminating safety hat, comprising a safety hat, a lamp carriage arm attached at one end to one side of the hat and extending downwardly in spaced relationship to the saEety hat wearer's head, and a lamp attached to the other end oE the lamp carriage arm so as to be positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
Other features of the invention will become apparent in the following detailed description of the preferred embodiment.
Reference will be madP to the accompanying drawings, provided by way oE e~ample only, in which:
Fig. 1 is an illustration of the preferred embodlment, showing the carriage arm and lamp installed on a sa.Eety hat;
FigO 2 is a rear view of the carriage arm and safety hat;
Fig. 3 is a view of lamp position adjustment means for the carriage arm;
Fig. 4 is a cross-section of a ball and socket joint in the preferred embodiment;
Fiy. 5 is an illustration of an alternative embodiment comprising a slotted slider riding in a channel in the carriage arm; and Fig. 6 is a view showing the channel in the carriage arm.
Referring now to the drawings, the preferred embodiment of the present invention will be described. A
carriage arm 1 is attached to a bracke-t on the side of a safety hat 2 by two bolts 32. The details of the a-ttachment will be described later. In the preferred embodiment, the carriage arm has a length of approximately 1~5 millimeters, a].though obviously there is a fair range of acceptable lengths.
A lamp support arm 4, including a ball and socket joint 7, is pivotally connected at one end to the lower end of the carriage arm, and supports a lamp 3 at its other end.
A threaded bolt 10 and a wingnut 12 clamp dlsc portions 14 of the carriage arm and lamp support arm together to lock the lamp support arm in position. The opposing faces 16 of the disc portions have serrations 17 to prevent slippage, as seen in Fiy. 3. A standard lamp bracket 5 is attached -to or integral with the socket portion of the ball joint, and the lamp 3 connects to it via a standard clip 9O A cable 15 is routed to a standard waist-car:ried ba-ttery pack (not illus-trated) which powers the light.
As illustrated in Fig. 4, the ball and socket joint preferably includes a sleeve 25 and a spring 26 within the ball to maintain -tension within -the join-t and thereby prevent slippage. Other means could of course be used to accomplish the same resultO
The attachment of the carriage arm to the safety hat will now be described in greater detail. The two bolts 32 shown in Fig. 1 are passed through holes in a bracket 34 manufactured by the Pel-tor AB of Sweden principally for the carriage of ear protectors. These brackets are commonly used in the mining industry, and are available in Canada from Norhammer Tools Co. Ltd., P.O.Box 2042, Highway 11, Graven-hurst, ~ntario P0C 1G0. Nuts 33 are threaded onto the bolts 32 and tightenecl to fasten the carriaye arm to the brac]et.
The bracket in turn is fastened securely to -the side of the safety hat.
If an ear protector is carriecl from the bracket, in accordance with its usual purpose, it can be accommodated inside and to the rear of the carriage arm, as can be seen from the outline of an ear protector ~0 in Fig. 1. As can be seen best from Fig. 2, the upper portion 20 of the carriage arm angles outwardly from the safety hat before bending at an angle of approximately 20 degrees to a more vertical angle at bend 21, thus creating a little more space for the ear protector. The brackets can be purchased as separate items, that is without the necessity of purchasing ear protectors in the event that ear protection is no-t desired as an aclditional feature.
~ s can be seen from Fig~ 1, the shape of the upper portion of the carriage arm is such in relation to the shape of the bracke-t that the carriage arm can be mountec1 on either of the t~Jo pairs of holes, 36 or 3~, in the bracke-t
3~. This permits -the carriaye arm to be carried on either 6~
the front or rear pair of holes on brackets on either side of the safety hat, thus offering maximum fle~ibility. In switching from side -to side, if desireable to do so, the wingnut 12 would be loosened and the lamp support arm would be pivoted through 180 degrees.
Referring now to Figs. 5 and 6, an alternative embodiment will be described. In this alternative embodi-ment, there is a channel 42 near the bottom o-F the carriage arm 1. The lamp support arm 4 has a slider portion 44 which includes a slot 45. A hole 43 is provided in the channel 42, through the carriag-e arm, to align with the slot~ The slider fits within the channel. A threaded stud 48 passes thro~lg-h the hole and the slot from the inside out, and a knurled thurnbnut 49 is provided so that the slider may be secured to the carriage arm~ The slot in the slider of course permits the lamp support arm 4 to be moved forward or bac]cward in -the channel as desired.
In this alternative embodirnent, as in the preferred emhodiment, the carriage arm can be carried on either side of the safety hat. The s]ider 44 is sirnp]y removed from the channel 42 by unscrewing the thumbnut 49, and is reinstalled in the channel from the other di.rection.
The various features of the invention result in several advantages. First, the direction in which the beam of the light is directed can be readlly changed by virtue of the ball and socket joint 7. Additionally, in the preferred embodiment, the direction may be changed by virtue of the adjustment of the wingnut 12 to vary the angle of the lamp sup~or-t arm with respect to the carriage arrn~ and in -the alternative ernhodiment the lamp may he moved hac]cward and forward. Furthermore, the light may be carried eithe:r on the left or the right side of the sa:Eety hat~ This flexibility of location and direction is obviously advantageous.
The location of the lamp in the general area of below the eye level and above and in front of -the collarbone is part icularly advantageous for illuminating close-up work, and for illuminating downwardly for walking or writing or checking dash-boards, etc.. Task-oriented lighting is greatly improved, and ~lare is generally xeduced because the miner is looking out over most of the light beam rather than through it The improved lighting an~ flexibility af~ords the mine worker greater con-veniencel effectiveness, and safetyO
A minor disadvantage of the present invention is that preferably but not essentially a small coun-terweight should be installed on the side of the helmet opposite the si.de on which the lamp carriage arm is installed. It has been found that a 150 gram counterweight is suitable. This slightly increased weight is more than offset by the advantages of the invention in providing impro~ed lighting for convenience and safety~
It will be appreciated that the above descriptlon of the preferred and alternative embodiments is by way of example only, and that numerous variations are possible which would still clearly be within the broad scope o:f the invention as desc:ribed and claimed.
For example, it should be apparent that an~ suitable means of attaching the carriage arm to the helmet could be em-ployed. The carriage arm may be bolted directly to the helmet/ or may be attached in any suitab].e manner to any suitable bracket, being in no way limited to attachment :~ 9~
to tl1e above-described bracket of Peltor As.
It should also be apparent that the carriacJe arm need not have the same shape as the one here described. A
wide variety of shapes which would still be within the scope of the invention can be readily envisioned.
Furthermore, although it is highly advantageous to incorporate the ball ancl socket joint in-to the design, there are advantages inherent in the position o~ the lamp which would rnake it aclvantageous to use even a carriage arm with no directiona] adjustment means for the lamp, and such use would be within the scope of the invention. IE the adjust-ment feature is used, it should also be apparent that there are a number of other ways in which this adjustment ~eature could be obtained, not in any way being limited to a ball and socket type of ac1justment. For example, there could be two adjustMent mechanisrns similar to that described above usincJ the disc portions 14, threaded bolt 10, and wingnut 12. I~ach would be ofset 90 degrees from the other so that one would provide elevation adjustment and the other hearing adjustMent.
In the above disclosure, the word "standard"
refers to equipment in common use in the mining industry, particularly in Canada. It will be appreciated that such equipment is well known to those skilled in the art, and thus no more detailed description is necessary, particularly since the details of the equipment are no-t vital to the invention. Thus for example, while those k.nowledgeab]e in the mining field are likely -to have a clear understandin~ of the meaning of the words "stanclard lamp bracket", one not havincJ such an understanding could still clearly carry out the teachings of the present invention, since the lamp bracket is not material to the substance of the invention.
While the invention is here described primarily in the context of a miner's hat ~or use in the mining industry, it should be apparent that this invention is in no way limited exclusively to the mining field, nor to other underground activity such as spelunking. The invention may be applied wherever there is a need for hands-free portable lighting, where it may be convenient to attach the lighting to a safety hat.
The expression "sa-Eety hat" is used in this description for convenience, but this invention is not restricted in its application to safety hats of the type commonly seen on con-struction sites or in mines. "Safety hat" should be interpreted to include any headgear capable of ade~uately supporting the carriage arm.
The words "roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone" are used in this specification, including the claims, to describe the lamp location which results from the use o the present invention. These words should be interpreted liberally, in keeping with the substance ancl spirit of the invention~ Specifically, without limiting the generality of the Eoregoing, these words should be interpreted to include, to a reasonable limit, areas essentially below the eye level and slightly above the collarbone, above and in front of the collar-bone, in front of the collarbone, and below and in Eront of the collarbone. Of course, areas directly in front o~ or in front of and below the collarbone may be unsuitable because the safety hat wearer would be unable to turn his or her head without inter~erence~
the front or rear pair of holes on brackets on either side of the safety hat, thus offering maximum fle~ibility. In switching from side -to side, if desireable to do so, the wingnut 12 would be loosened and the lamp support arm would be pivoted through 180 degrees.
Referring now to Figs. 5 and 6, an alternative embodiment will be described. In this alternative embodi-ment, there is a channel 42 near the bottom o-F the carriage arm 1. The lamp support arm 4 has a slider portion 44 which includes a slot 45. A hole 43 is provided in the channel 42, through the carriag-e arm, to align with the slot~ The slider fits within the channel. A threaded stud 48 passes thro~lg-h the hole and the slot from the inside out, and a knurled thurnbnut 49 is provided so that the slider may be secured to the carriage arm~ The slot in the slider of course permits the lamp support arm 4 to be moved forward or bac]cward in -the channel as desired.
In this alternative embodirnent, as in the preferred emhodiment, the carriage arm can be carried on either side of the safety hat. The s]ider 44 is sirnp]y removed from the channel 42 by unscrewing the thumbnut 49, and is reinstalled in the channel from the other di.rection.
The various features of the invention result in several advantages. First, the direction in which the beam of the light is directed can be readlly changed by virtue of the ball and socket joint 7. Additionally, in the preferred embodiment, the direction may be changed by virtue of the adjustment of the wingnut 12 to vary the angle of the lamp sup~or-t arm with respect to the carriage arrn~ and in -the alternative ernhodiment the lamp may he moved hac]cward and forward. Furthermore, the light may be carried eithe:r on the left or the right side of the sa:Eety hat~ This flexibility of location and direction is obviously advantageous.
The location of the lamp in the general area of below the eye level and above and in front of -the collarbone is part icularly advantageous for illuminating close-up work, and for illuminating downwardly for walking or writing or checking dash-boards, etc.. Task-oriented lighting is greatly improved, and ~lare is generally xeduced because the miner is looking out over most of the light beam rather than through it The improved lighting an~ flexibility af~ords the mine worker greater con-veniencel effectiveness, and safetyO
A minor disadvantage of the present invention is that preferably but not essentially a small coun-terweight should be installed on the side of the helmet opposite the si.de on which the lamp carriage arm is installed. It has been found that a 150 gram counterweight is suitable. This slightly increased weight is more than offset by the advantages of the invention in providing impro~ed lighting for convenience and safety~
It will be appreciated that the above descriptlon of the preferred and alternative embodiments is by way of example only, and that numerous variations are possible which would still clearly be within the broad scope o:f the invention as desc:ribed and claimed.
For example, it should be apparent that an~ suitable means of attaching the carriage arm to the helmet could be em-ployed. The carriage arm may be bolted directly to the helmet/ or may be attached in any suitab].e manner to any suitable bracket, being in no way limited to attachment :~ 9~
to tl1e above-described bracket of Peltor As.
It should also be apparent that the carriacJe arm need not have the same shape as the one here described. A
wide variety of shapes which would still be within the scope of the invention can be readily envisioned.
Furthermore, although it is highly advantageous to incorporate the ball ancl socket joint in-to the design, there are advantages inherent in the position o~ the lamp which would rnake it aclvantageous to use even a carriage arm with no directiona] adjustment means for the lamp, and such use would be within the scope of the invention. IE the adjust-ment feature is used, it should also be apparent that there are a number of other ways in which this adjustment ~eature could be obtained, not in any way being limited to a ball and socket type of ac1justment. For example, there could be two adjustMent mechanisrns similar to that described above usincJ the disc portions 14, threaded bolt 10, and wingnut 12. I~ach would be ofset 90 degrees from the other so that one would provide elevation adjustment and the other hearing adjustMent.
In the above disclosure, the word "standard"
refers to equipment in common use in the mining industry, particularly in Canada. It will be appreciated that such equipment is well known to those skilled in the art, and thus no more detailed description is necessary, particularly since the details of the equipment are no-t vital to the invention. Thus for example, while those k.nowledgeab]e in the mining field are likely -to have a clear understandin~ of the meaning of the words "stanclard lamp bracket", one not havincJ such an understanding could still clearly carry out the teachings of the present invention, since the lamp bracket is not material to the substance of the invention.
While the invention is here described primarily in the context of a miner's hat ~or use in the mining industry, it should be apparent that this invention is in no way limited exclusively to the mining field, nor to other underground activity such as spelunking. The invention may be applied wherever there is a need for hands-free portable lighting, where it may be convenient to attach the lighting to a safety hat.
The expression "sa-Eety hat" is used in this description for convenience, but this invention is not restricted in its application to safety hats of the type commonly seen on con-struction sites or in mines. "Safety hat" should be interpreted to include any headgear capable of ade~uately supporting the carriage arm.
The words "roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone" are used in this specification, including the claims, to describe the lamp location which results from the use o the present invention. These words should be interpreted liberally, in keeping with the substance ancl spirit of the invention~ Specifically, without limiting the generality of the Eoregoing, these words should be interpreted to include, to a reasonable limit, areas essentially below the eye level and slightly above the collarbone, above and in front of the collar-bone, in front of the collarbone, and below and in Eront of the collarbone. Of course, areas directly in front o~ or in front of and below the collarbone may be unsuitable because the safety hat wearer would be unable to turn his or her head without inter~erence~
Claims (22)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A worker's lamp carriage arm comprising:
an arm portion;
first attachment means at one end of said arm portion for attaching said arm portion to a safety hat to extend downwardly in spaced relationship to the side of the safety hat wearer's head;
second attachment means connected to said arm portion remote from said first attachment means, for attaching a lamp;
in which the length of said arm portion and the location of said second attachment means is such that said lamp may be attached for carriage roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
an arm portion;
first attachment means at one end of said arm portion for attaching said arm portion to a safety hat to extend downwardly in spaced relationship to the side of the safety hat wearer's head;
second attachment means connected to said arm portion remote from said first attachment means, for attaching a lamp;
in which the length of said arm portion and the location of said second attachment means is such that said lamp may be attached for carriage roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
2. A worker's lamp carriage arm as recited in claim 1, in which said second attachment means includes means whereby said lamp may be pivoted with respect to said carriage arm, thereby permitting the direction of the lamp beam to be varied by the safety hat wearer.
3. A worker's lamp carriage arm as recited in claim in which said pivot means includes a ball and a socket in a frictional fit.
4. A worker's lamp carriage arm as recited in claim 1, in which said second attachment means includes a lamp support arm pivotally connected to said lamp carriage arm between said lamp carriage arm and the lamp.
5. A worker's lamp carriage arm as recited in claim 4, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
6. A worker's lamp carriage arm as recited in claim 1, in which said second attachment means includes a lamp support arm comprising a slider engaging a channel provided in said lamp carriage arm, the slider having a slot, the channel having a hole, and the slider being secured in the channel by fastening means passing through the slot and the hole.
7. A worker's lamp carriage arm as recited in claim 6, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
8. A worker's lighting apparatus comprising a lamp carriage arm, attachment means at one end of said lamp carriage arm for attaching said lamp carriage arm to one side of a safety hat, and a lamp attached to the other end of the lamp carriage arm, said lamp carriage arm extending downwardly when attached to the safety hat, in spaced relationship to the safety hat wearer's head, the length of said lamp carriage arm being such that the lamp is positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
9. A worker's lighting apparatus as recited in claim 8, in which said lamp is pivotally attached to the lamp carriage arm whereby the direction of the lamp's beam may be varied by the safety hat wearer.
10. A worker's lighting apparatus as recited in claim 9, in which said pivotal attachment includes a ball and a socket in a frictional fit.
11. A worker's lighting apparatus as recited in claim 8, in which said lamp is pivotally attached to the end of the carriage arm, the pivotal attachment including a lamp support arm pivotally connected to said lamp carriage arm between said lamp carriage arm and the lamp.
12. A worker's lighting apparatus as recited in claim 11, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
13. A worker's lighting apparatus as recited in claim 8, in which said lamp is pivotally attached to the end of the carriage arm, the pivotal attachment including a lamp support arm comprising a slider engaging a channel provided in said lamp carriage arm, the slider having a slot, the channel having a hole, and the slider being secured in the channel by fastening means passing through the slot and the hole.
14. A worker's lighting apparatus as recited in claim 13, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
15. A worker's safety hat, comprising a safety hat, a lamp carriage arm attached at one end to one side of said safety hat and extending downwardly in spaced relationship to the safety hat wearer's head, and a lamp attached to the other end of the lamp carriage arm, the length of said lamp carriage arm being such that the lamp is positioned roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone.
16. A worker's safety hat as recited in claim 15, in which said lamp is pivotally attached to the carriage arm, whereby the direction of the beam of the lamp may be varied by the hat wearer.
17. A worker's safety hat as recited in claim 16, in which said pivotal attachment includes a ball and a socket in a frictional fit.
18. A worker's safety hat as recited in claim 15, in which said lamp is pivotally attached to said carriage arm, the pivotal connection including a lamp support arm pivotally connected to said lamp carriage arm between said lamp carriage arm and the lamp.
19. A worker's safety hat as recited in claim 18, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
20. A worker's safety hat as recited in claim 15, in which said lamp is pivotally attached to the end of the carriage arm, the pivotal attachment including a lamp support arm comprising a slider engaging a channel provided in said lamp carriage arm, the slider having a slot, the channel having a hole, and the slider being secured in the channel by fastening means passing through the slot and the hole.
21. A worker's safety hat as recited in claim 20, in which said lamp support arm comprises two segments pivotally connected to each other by a ball and socket joint.
22. A worker's lamp carriage arm comprising:
a first arm;
first attachment means at one end of said arm for attaching said arm to a safety hat to extend downwardly in spaced relationship to the side of the safety hat wearer's head, a second arm pivotally connected at one end to the other end of said first arm, for pivoting in a plane substantially parallel to the side of the safety hat wearer's head; and a lamp-holding bracket pivotally connected to the other end of said second arm for pivoting in at least a plane substantially at right angles to said other plane;
in which the length of said arms is such that a lamp may be attached to a safety hat for carriage roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone, and in which by virtue of said pivotal connections the direction of an attached lamp's beam may be varied.
a first arm;
first attachment means at one end of said arm for attaching said arm to a safety hat to extend downwardly in spaced relationship to the side of the safety hat wearer's head, a second arm pivotally connected at one end to the other end of said first arm, for pivoting in a plane substantially parallel to the side of the safety hat wearer's head; and a lamp-holding bracket pivotally connected to the other end of said second arm for pivoting in at least a plane substantially at right angles to said other plane;
in which the length of said arms is such that a lamp may be attached to a safety hat for carriage roughly in the area of below the safety hat wearer's eye level and above and in front of the safety hat wearer's collarbone, and in which by virtue of said pivotal connections the direction of an attached lamp's beam may be varied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000443713A CA1196151A (en) | 1983-12-20 | 1983-12-20 | Lamp carriage arm for safety hats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000443713A CA1196151A (en) | 1983-12-20 | 1983-12-20 | Lamp carriage arm for safety hats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1196151A true CA1196151A (en) | 1985-11-05 |
Family
ID=4126782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000443713A Expired CA1196151A (en) | 1983-12-20 | 1983-12-20 | Lamp carriage arm for safety hats |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1196151A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2649867A1 (en) * | 1989-07-21 | 1991-01-25 | Petzl Ets | Orientable mechanism with double articulation for illumination lamp secured to a safety helmet with peak (visor) |
-
1983
- 1983-12-20 CA CA000443713A patent/CA1196151A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2649867A1 (en) * | 1989-07-21 | 1991-01-25 | Petzl Ets | Orientable mechanism with double articulation for illumination lamp secured to a safety helmet with peak (visor) |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |