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495:"Definition of Dog -> In engineering a dog is a tool that prevents movement or imparts movement by offering physical obstruction or engagement of some kind. It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement. Or it may couple various parts together so that they move in unison - the primary example of this being a flexible drive to mate two shafts in order to transmit torque"
341:, the most basic form of which comprises a smooth disc and pressure plate: when pressed together they lock up simply through friction, which permits some degree of slip as the mating pressure is modulated and thus permits some difference in the rotational speeds of the discs. A dog clutch, however, is a binary system, thus requiring that the rotating speeds of the two discs be matched prior to mating to avoid damage by
178:(animal) biting and holding on, the "dog" name derived from the basic idea of how a dog jaw locks on, by the movement of the jaw, or by the presence of many teeth. In engineering the "dog" device has some special engineering work when making it – it is not a simple part to make as it is not a simple bar or pipe, and the metal used in its construction is likely to be special rather than regular steel.
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331:, which comprises a pair of unconnected discs aligned axially, each with a radial arrangement of lugs which oppose one another and which interlock when the plates are in contact. Examples of dog clutches can be found in many vintage automobiles and are implemented in some modern
151:, that prevents or imparts movement through physical engagement. It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement. Or it may couple various parts together so that they move in unison – the primary example of this being a
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between compartments inside a ship can be closed during emergencies to seal off one compartment from another, thus isolating flooding, smoke and heat from adjoining compartments. The objects that are wedged against the door to hold it closed are
222:(which can be swung shut whenever storms approach in order to protect the window glass from impact by wind-blown debris) are held open during pleasant weather by wrought-iron or cast-iron dogs, which are called
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In film projection, reel arms and film rewinds employ drive pins adjacent to the spindle shaft, which are used to drive the reel as the spindle rotates. These are referred to as drive dogs or reel dogs.
202:, when present chainsaw dogs are mounted where the bar meets the power head. Chainsaw dogs provide stability and serve as a sort of fulcrum for swinging the bar through the item being cut.
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There is potential for confusion as "dog tensioners" are levers that are named due to the shape of the lever appearing as a dog leg, as the lever is in a
167:, the dog clutches, or "dogs" lock the selected gear to the shaft it rotates on. Unless the dog is engaged, the gear will simply freewheel on the shaft.
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means to close the doors and secure them in the closed positions. Similarly, hatches are the horizontal openings between decks, and are secured with
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397:(shaping with an axe) timbers or sawing with some types of water powered sawmills log dogs are used to hold the timber in place.
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arrangement, or "dog trailers", which are named due to the use of multiple trailers for transporting animal cages.
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within the system - this can be achieved automatically, such as by implementing a
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of a sewing machine feed the fabric in a linear stepping motion past the needle.
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365:(or "lathe carrier") is a form of clutch dog used to secure a workpiece to a
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used in a pair to secure wood for a fire or skewers for cooking over one.
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Clutch dogs are the individual lugs within a mechanism called the
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with its dog extended, holding (without using the dog) a wooden
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to allow clamping of wooden items whilst being worked.
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467:Log dogs are used to hold timbers in place while
32:Dog (disambiguation) § Tools and Engineering
163:to lock together two spinning components. In a
313:A firedog, fire dog, or dog iron is a form of
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258:, and are secured in place by spring-loaded
389:In carpentry log dogs were used to repair
127:Learn how and when to remove this message
155:to mate two shafts in order to transmit
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250:Ladder dogs secure the sections of an
254:at a given height by engaging on its
189:Subtypes and examples of applications
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335:. The dog clutch contrasts with the
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455:Straight-leg lathe dogs (carriers)
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274:Hatch dogs around a door on the
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147:or part of a tool, such as a
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198:Although not seen on all
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76:"Dog" engineering
401:Drive dog or reel dog
385:Log dog or timber dog
347:synchromesh mechanism
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170:This word usage is a
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30:For other uses, see
499:engineeringslab.com
165:manual transmission
159:. Some devices use
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502:. Retrieved
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473:timber frame
443:A ladder dog
431:being worked
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59:Please help
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393:joints. In
367:metal lathe
218:Functional
214:Shutter dog
206:Shutter dog
504:2023-06-03
481:References
425:bench vise
328:dog clutch
321:Clutch dog
303:hatch dogs
246:Ladder dog
183:pantograph
87:newspapers
429:bench dog
379:feed dogs
363:lathe dog
357:Lathe dog
290:bulkheads
266:Door dog
236:bench dog
230:Bench dog
200:chainsaws
117:June 2023
519:Category
373:Feed dog
172:metaphor
18:Door dog
475:joints.
410:Gallery
315:andiron
309:Firedog
101:scholar
469:hewing
395:hewing
157:torque
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525:Tools
297:. To
278:Knorr
260:pawls
256:rungs
143:is a
108:JSTOR
94:books
377:The
343:jerk
295:dogs
284:The
276:R/V
149:pawl
145:tool
80:news
176:dog
141:dog
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